# ActiveCampaign, Constant Contact vs Klaviyo Comparison

| | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Star Rating** | 4.4 out of 5 | 4.1 out of 5 | 4.6 out of 5 | 
| **Total Reviews** | 14,682 | 7,391 | 1,350 | 
| **Largest Market Segment** | Small-Business (91.9% of reviews) | Small-Business (70.5% of reviews) | Small-Business (82.2% of reviews) | 
| **Entry Level Price** | Starting at $15.00 Per Month | Starting at $12.00 Per Month | No pricing available | 

---
## Top Pros & Cons

### ActiveCampaign

Pros:
- Ease of Use (847 reviews)
- Automation (787 reviews)

Cons:
- Learning Curve (418 reviews)
- Expensive (403 reviews)

### Constant Contact

Pros:
- Ease of Use (1059 reviews)
- Easy Creation (495 reviews)

Cons:
- Missing Features (286 reviews)
- Limited Customization (255 reviews)

### Klaviyo

Pros:
- Ease of Use (160 reviews)
- Email Marketing (123 reviews)

Cons:
- Expensive (69 reviews)
- Missing Features (56 reviews)

---
## Ratings Comparison
| Rating | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
  | **Meets Requirements** | 8.8 (11206 reviews) | 8.4 (6364 reviews) | 9.0 (985 reviews) | 
  | **Ease of Use** | 8.2 (11324 reviews) | 8.5 (6404 reviews) | 8.6 (994 reviews) | 
  | **Ease of Setup** | 8.0 (7259 reviews) | 8.6 (3563 reviews) | 8.5 (642 reviews) | 
  | **Ease of Admin** | 8.4 (6350 reviews) | 8.6 (3115 reviews) | 8.9 (522 reviews) | 
  | **Quality of Support** | 8.5 (10370 reviews) | 8.3 (5210 reviews) | 8.4 (937 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.8 (6208 reviews) | 8.6 (2988 reviews) | 8.9 (526 reviews) | 
  | **Product Direction (% positive)** | 8.2 (10600 reviews) | 7.1 (6252 reviews) | 8.9 (933 reviews) | 

---
## Pricing

### ActiveCampaign

#### Entry-Level Pricing

Plan: Starter

Price: Starting at $15.00 Per Month

Description: Get started with personalized marketing campaigns.

Key Features:
- 5 actions per automation 
- Basic & Inline Forms
- Site Tracking

[Browse all 4 editions](https://www.g2.com/products/activecampaign/pricing)

#### Free Trial

Yes

### Constant Contact

#### Entry-Level Pricing

Plan: Lite

Price: Starting at $12.00 Per Month

Description: Start marketing today with a simple suite of email, social, and event management tools, all backed by marketing experts and legendary support.

Key Features:
- Basic email marketing with easy-to-use templates.
- Automated Welcome Email for new contacts
- Social Marketing

[Browse all 3 editions](https://www.g2.com/products/constant-contact/pricing)

#### Free Trial

Yes

### Klaviyo

#### Entry-Level Pricing

No pricing available

#### Free Trial

Yes

---
## Features Comparison By Category

### CRM

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.3/10 | 3771 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Sales Force Automation

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Contact & Account Management** | 8.2 (2113 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Partner Relationship Mgmt. (PRM)** | 7.0 (1023 reviews) | Not enough data | Not enough data | 
| **Opportunity & Pipeline Mgmt.** | 7.9 (1772 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Task / Activity Management** | 7.7 (1688 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Territory & Quota Management** | 7.0 (1225 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Desktop Integration** | 7.6 (1437 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Product & Price List Management** | 7.0 (1211 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Quote & Order Management** | 6.9 (1143 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Customer Contract Management** | 7.3 (1286 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Marketing Automation

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Email Marketing** | 9.0 (2326 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Campaign Management** | 8.8 (2213 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Lead Management** | 8.5 (2158 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Marketing ROI Analytics** | 7.8 (1488 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Customer Support

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Case Management** | 7.6 (1475 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Customer Support Portal** | 7.7 (1633 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Knowledge Base** | 7.9 (1767 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Call Center Features** | 7.0 (1328 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Support Analytics** | 7.5 (1456 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Reporting & Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Reporting** | 7.7 (1960 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Dashboards** | 7.9 (2149 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Forecasting** | 7.1 (1294 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Mobile & Social

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Social Collaboration Features** | 7.3 (1228 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Social Network Integration** | 7.3 (1332 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Mobile User Support** | 7.1 (1375 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Platform

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Customization** | 7.8 (1996 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Workflow Capability** | 8.0 (1948 reviews) ✓ Verified | Not enough data | Not enough data | 
| **User, Role, and Access Management** | 8.1 (2036 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Internationalization** | 7.3 (1456 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Sandbox / Test Environments** | 7.0 (1353 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Document & Content Mgmt.** | Feature Not Available | Not enough data | Not enough data | 
| **Performance and Reliability** | 8.2 (2108 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Output Document Generation** | 7.4 (1479 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Integration

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Data Import & Export Tools** | 8.1 (1935 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Integration APIs** | 8.1 (1938 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Breadth of Partner Applications** | 7.8 (1640 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | 6.1 (650 reviews) | Not enough data | Not enough data | 

#### Agentic AI - CRM

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.5 (90 reviews) | Not enough data | Not enough data | 
| **Multi-step Planning** | 6.5 (89 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 6.7 (91 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 6.3 (87 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 6.5 (89 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 6.5 (88 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 6.6 (89 reviews) | Not enough data | Not enough data | 

### Email Marketing

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 7.7/10 | 5388 |
| **Klaviyo** | N/A | N/A |

#### Email Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Email and Mobile Preview** | Not enough data | 8.6 (4935 reviews) ✓ Verified | Not enough data | 
| **Manage Email Lists** | Not enough data | 8.5 (5065 reviews) ✓ Verified | Not enough data | 
| **High-Volume Sending** | Not enough data | 8.9 (4746 reviews) ✓ Verified | Not enough data | 
| **Building and Personalizing Emails** | Not enough data | 8.3 (5031 reviews) ✓ Verified | Not enough data | 
| **Sending Outbound Emails** | Not enough data | 8.9 (5028 reviews) ✓ Verified | Not enough data | 
| **Manage Email Deliverability** | Not enough data | 8.5 (4862 reviews) ✓ Verified | Not enough data | 
| **Automated Email Responses** | Not enough data | 8.3 (3945 reviews) ✓ Verified | Not enough data | 
| **Multi-user Account** | Not enough data | 8.4 (1785 reviews) ✓ Verified | Not enough data | 
| **Surveys** | Not enough data | 7.9 (1610 reviews) ✓ Verified | Not enough data | 

#### Reporting & Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **A/B Testing** | Not enough data | 7.9 (2389 reviews) ✓ Verified | Not enough data | 
| **Basic Reporting** | Not enough data | 8.4 (4596 reviews) ✓ Verified | Not enough data | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | 7.1 (522 reviews) | Not enough data | 
| **AI Text Summarization** | Not enough data | 7.0 (519 reviews) | Not enough data | 

#### Agentic AI - Email Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.5 (369 reviews) | Not enough data | 
| **Autonomous Task Execution** | Not enough data | 6.6 (366 reviews) | Not enough data | 
| **Multi-step Planning** | Not enough data | 6.8 (365 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.7 (363 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.7 (362 reviews) | Not enough data | 

#### Integration

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Data Import & Export Tools** | Not enough data | 8.2 (2732 reviews) ✓ Verified | Not enough data | 
| **Integration APIs** | Not enough data | 7.5 (1958 reviews) ✓ Verified | Not enough data | 
| **Breadth of Partner Applications** | Not enough data | 7.5 (1938 reviews) ✓ Verified | Not enough data | 
| **CRM Integration** | Not enough data | 7.3 (1371 reviews) ✓ Verified | Not enough data | 
| **Social Media Integration** | Not enough data | 7.8 (1524 reviews) ✓ Verified | Not enough data | 
| **E-Commerce Integration** | Not enough data | 7.2 (1290 reviews) ✓ Verified | Not enough data | 

### Marketing Automation

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.6/10 | 7447 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 8.2/10 | 676 |

#### Email Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Building and Personalizing Emails** | 8.7 (6497 reviews) ✓ Verified | Not enough data | 9.0 (569 reviews) ✓ Verified | 
| **Sending Outbound Emails** | 8.9 (6334 reviews) ✓ Verified | Not enough data | 9.3 (558 reviews) ✓ Verified | 
| **Manage Email Deliverability** | 8.5 (6145 reviews) ✓ Verified | Not enough data | 8.9 (504 reviews) ✓ Verified | 
| **Automated Email Responses** | 8.8 (5793 reviews) ✓ Verified | Not enough data | 9.0 (495 reviews) ✓ Verified | 

#### Online Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Landing Pages and Forms** | 7.4 (4396 reviews) ✓ Verified | Not enough data | 7.9 (382 reviews) ✓ Verified | 
| **Dynamic Content** | 7.9 (4079 reviews) ✓ Verified | Not enough data | 8.3 (406 reviews) ✓ Verified | 
| **A/B Testing** | 7.8 (3538 reviews) ✓ Verified | Not enough data | 8.7 (439 reviews) ✓ Verified | 
| **Mobile Optimized** | 8.1 (4868 reviews) ✓ Verified | Not enough data | 8.7 (454 reviews) | 
| **Search Tracking and Optimization** | 7.8 (3471 reviews) ✓ Verified | Not enough data | 8.2 (253 reviews) | 

#### Lead Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Marketing Lead Database** | 8.3 (4372 reviews) ✓ Verified | Not enough data | 8.5 (356 reviews) | 
| **Data Quality Management** | 8.0 (3965 reviews) ✓ Verified | Not enough data | 8.4 (273 reviews) | 
| **Segmentation** | 8.5 (5124 reviews) ✓ Verified | Not enough data | 9.0 (522 reviews) ✓ Verified | 
| **Lead Scoring and Grading** | 8.0 (3493 reviews) ✓ Verified | Not enough data | 7.8 (221 reviews) | 
| **Lead Nurturing** | 8.5 (4362 reviews) ✓ Verified | Not enough data | 8.5 (359 reviews) ✓ Verified | 
| **Online Behavior Tracking** | 8.1 (4005 reviews) ✓ Verified | Not enough data | 8.5 (401 reviews) ✓ Verified | 
| **Automated Alerts and Tasks** | 8.2 (3798 reviews) ✓ Verified | Not enough data | 8.4 (333 reviews) ✓ Verified | 
| **CRM Lead Integration** | 8.0 (3579 reviews) ✓ Verified | Not enough data | 8.2 (288 reviews) ✓ Verified | 

#### Campaign Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Program Management** | 8.0 (3492 reviews) ✓ Verified | Not enough data | 8.7 (348 reviews) ✓ Verified | 
| **Event / Webinar Marketing** | 7.8 (3107 reviews) ✓ Verified | Not enough data | 8.0 (199 reviews) | 
| **Calendaring** | 7.2 (2638 reviews) | Not enough data | 8.1 (288 reviews) ✓ Verified | 
| **Budgeting** | 6.8 (2338 reviews) ✓ Verified | Not enough data | 7.6 (198 reviews) | 

#### Social

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Social Listening** | 6.9 (2324 reviews) ✓ Verified | Not enough data | Feature Not Available | 
| **Social Sharing** | 7.3 (2680 reviews) ✓ Verified | Not enough data | 7.8 (196 reviews) | 
| **Social Campaigns** | 7.3 (2550 reviews) ✓ Verified | Not enough data | 7.8 (189 reviews) | 
| **Social Media Engagement** | 7.1 (2442 reviews) ✓ Verified | Not enough data | 7.5 (184 reviews) | 
| **Social Media Advertising** | 7.0 (2400 reviews) ✓ Verified | Not enough data | 7.8 (258 reviews) ✓ Verified | 

#### Reporting & Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Basic Reporting** | 8.1 (5203 reviews) ✓ Verified | Not enough data | 8.5 (496 reviews) ✓ Verified | 
| **Web Analytics** | 7.6 (3590 reviews) ✓ Verified | Not enough data | 8.3 (416 reviews) ✓ Verified | 
| **ROI Analytics** | 7.2 (2920 reviews) ✓ Verified | Not enough data | 8.4 (429 reviews) ✓ Verified | 
| **Revenue Analytics** | 7.1 (2725 reviews) ✓ Verified | Not enough data | 8.4 (443 reviews) ✓ Verified | 
| **SEO / Keyword Analytics** | 6.9 (2443 reviews) ✓ Verified | Not enough data | 7.6 (200 reviews) | 

#### Platform

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Customization ** | 7.9 (3729 reviews) ✓ Verified | Not enough data | 8.5 (337 reviews) ✓ Verified | 
| **Workflow Capability** | 8.2 (3544 reviews) ✓ Verified | Not enough data | 8.7 (328 reviews) ✓ Verified | 
| **User, Role, and Access Management** | 8.3 (3707 reviews) ✓ Verified | Not enough data | 8.9 (318 reviews) ✓ Verified | 
| **Internationalization** | 7.5 (2402 reviews) ✓ Verified | Not enough data | 8.3 (208 reviews) ✓ Verified | 
| **Sandbox / Test Environments** | 7.0 (2134 reviews) ✓ Verified | Not enough data | 7.8 (194 reviews) ✓ Verified | 
| **Performance and Reliability** | 8.4 (3733 reviews) ✓ Verified | Not enough data | 8.9 (325 reviews) ✓ Verified | 
| **Output Document Generation** | 7.5 (2427 reviews) ✓ Verified | Not enough data | 8.0 (161 reviews) | 

#### Agentic AI - Marketing Automation

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.3 (221 reviews) | Not enough data | 6.8 (27 reviews) | 
| **Multi-step Planning** | 6.4 (221 reviews) | Not enough data | 7.0 (25 reviews) | 
| **Cross-system Integration** | 6.5 (219 reviews) | Not enough data | 7.4 (26 reviews) | 
| **Adaptive Learning** | 6.4 (218 reviews) | Not enough data | 7.0 (23 reviews) | 
| **Proactive Assistance** | 6.3 (222 reviews) | Not enough data | 6.9 (26 reviews) | 
| **Decision Making** | 6.4 (220 reviews) | Not enough data | 7.3 (25 reviews) | 

#### Integration

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Data Import & Export Tools** | 8.1 (3758 reviews) ✓ Verified | Not enough data | 8.5 (324 reviews) ✓ Verified | 
| **Integration APIs** | 8.1 (3659 reviews) ✓ Verified | Not enough data | 8.6 (324 reviews) ✓ Verified | 
| **Breadth of Partner Applications** | 7.8 (3140 reviews) ✓ Verified | Not enough data | 8.5 (272 reviews) ✓ Verified | 

### Conversational Marketing

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 6.6/10 | 1884 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 7.0/10 | 17 |

#### Messenger

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Sequencing** | 7.4 (1124 reviews) | Not enough data | 7.6 (14 reviews) | 
| **AI** | 5.9 (976 reviews) | Not enough data | 6.4 (14 reviews) | 
| **Live Chat** | 6.6 (1002 reviews) | Not enough data | 6.5 (14 reviews) | 
| **Customization Interface** | 6.9 (1044 reviews) | Not enough data | 6.3 (13 reviews) | 

#### Channels

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Social Media** | 6.4 (988 reviews) | Not enough data | 6.4 (13 reviews) | 
| **Website** | 7.3 (1173 reviews) | Not enough data | 7.4 (14 reviews) | 
| **Text Message (SMS)** | 6.0 (915 reviews) | Not enough data | 6.5 (14 reviews) | 
| **Voice Assistants** | 5.5 (832 reviews) | Not enough data | 6.3 (13 reviews) | 
| **Other** | 6.0 (839 reviews) | Not enough data | 6.9 (13 reviews) | 

#### Customers

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Targeting** | 7.6 (1234 reviews) | Not enough data | 8.3 (14 reviews) | 
| **Profiles** | 7.4 (1156 reviews) | Not enough data | 7.7 (14 reviews) | 
| **Analytics** | 7.6 (1294 reviews) | Not enough data | 7.3 (13 reviews) | 
| **Lead Gathering** | 7.6 (1235 reviews) | Not enough data | 6.9 (13 reviews) | 
| **Sales Conversion** | 7.2 (1182 reviews) | Not enough data | 6.9 (14 reviews) | 

#### Agentic AI - Conversational Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.2 (30 reviews) | Not enough data | Not enough data | 
| **Multi-step Planning** | 6.1 (30 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 6.4 (29 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 6.2 (30 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 5.9 (29 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 6.0 (29 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 6.2 (29 reviews) | Not enough data | Not enough data | 

### Lead Generation

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Lead Generation

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lead Builder** | Not enough data | Not enough data | Not enough data | 
| **CRM Integration** | Not enough data | Not enough data | Not enough data | 
| **Marketing Automation Integration** | Not enough data | Not enough data | Not enough data | 
| **Social Media Integration** | Not enough data | Not enough data | Not enough data | 
| **Data Import & Export Tools** | Not enough data | Not enough data | Not enough data | 

### Email Deliverability

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 7.6/10 | 1187 |
| **Klaviyo** | 8.3/10 | 40 |

#### Diagnosis

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **IP Address ** | Not enough data | 7.9 (768 reviews) | 8.2 (29 reviews) | 
| **Domains** | Not enough data | 8.1 (763 reviews) | 8.6 (30 reviews) | 
| **Content ** | Not enough data | 8.5 (948 reviews) | 8.4 (33 reviews) | 
| **Policy Compliance** | Not enough data | 8.4 (851 reviews) | 8.5 (31 reviews) | 

#### Tracking

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Processing Time** | Not enough data | Feature Not Available | 8.3 (28 reviews) | 
| **Placement ** | Not enough data | Feature Not Available | 7.9 (28 reviews) | 
| **Open Rate** | Not enough data | 8.8 (1088 reviews) | 9.0 (35 reviews) | 
| **Time to Open** | Not enough data | Feature Not Available | 8.7 (31 reviews) | 
| **Alerts** | Not enough data | 8.5 (924 reviews) | 8.6 (28 reviews) | 

#### Reporting

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Campaign Performance** | Not enough data | 8.8 (1068 reviews) | 9.1 (33 reviews) | 
| **Domain Reputation** | Not enough data | Feature Not Available | 8.7 (29 reviews) | 
| **Brand Reputation** | Not enough data | Feature Not Available | 8.7 (29 reviews) | 
| **Blacklist and Whitelist** | Not enough data | 8.0 (829 reviews) | 8.4 (27 reviews) | 

#### Agentic AI - Email Deliverability

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.4 (117 reviews) | 8.2 (14 reviews) | 
| **Cross-system Integration** | Not enough data | 6.2 (117 reviews) | 8.1 (15 reviews) | 
| **Adaptive Learning** | Not enough data | 6.4 (114 reviews) | 8.0 (14 reviews) | 
| **Proactive Assistance** | Not enough data | 6.5 (114 reviews) | 7.3 (14 reviews) | 
| **Decision Making** | Not enough data | 6.4 (114 reviews) | 8.0 (14 reviews) | 

### Sales Engagement

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 6.9/10 | 861 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Integrated Workflows

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Task Management** | 7.1 (605 reviews) | Not enough data | Not enough data | 
| **Email Tracking/Automation** | 8.6 (782 reviews) | Not enough data | Not enough data | 
| **Calls and Voice** | 6.3 (499 reviews) | Not enough data | Not enough data | 
| **Other Outreach Options ** | 6.7 (525 reviews) | Not enough data | Not enough data | 
| **CRM Integration** | 7.6 (632 reviews) | Not enough data | Not enough data | 
| **Calendar** | 6.9 (544 reviews) | Not enough data | Not enough data | 
| **Shared Records** | 6.9 (516 reviews) | Not enough data | Not enough data | 

#### Repeatability and Reportability

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Content Management** | 7.5 (623 reviews) | Not enough data | Not enough data | 
| **Workflow Management** | 7.5 (621 reviews) | Not enough data | Not enough data | 
| **Workflow Performance** | 7.4 (585 reviews) | Not enough data | Not enough data | 
| **Sales Coaching and Insights** | 6.7 (516 reviews) | Not enough data | Not enough data | 
| **Gamification** | 6.0 (472 reviews) | Not enough data | Not enough data | 

#### AI and Automation

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lead Prioritization** | 7.1 (557 reviews) | Not enough data | Not enough data | 
| **Lead Scoring** | 7.1 (559 reviews) | Not enough data | Not enough data | 
| **Best Time of Day Scheduling** | 7.2 (565 reviews) | Not enough data | Not enough data | 
| **Buyer Intelligence** | 6.6 (498 reviews) | Not enough data | Not enough data | 
| **Machine Learning** | 6.4 (476 reviews) | Not enough data | Not enough data | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | 6.1 (415 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Sales Engagement

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.9 (35 reviews) | Not enough data | Not enough data | 
| **Multi-step Planning** | 6.7 (35 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 7.0 (35 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 6.5 (35 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 6.6 (35 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 6.6 (35 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 6.9 (35 reviews) | Not enough data | Not enough data | 

### E-Commerce Personalization

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.6/10 | 581 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Visitor Behavior

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Monitoring** | 7.6 (409 reviews) | Not enough data | Not enough data | 
| **Targeting** | 7.9 (399 reviews) | Not enough data | Not enough data | 
| **Guided Selling** | 7.1 (355 reviews) | Not enough data | Not enough data | 

#### Templates

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Library** | 7.3 (411 reviews) | Not enough data | Not enough data | 
| **Customization** | 8.0 (439 reviews) | Not enough data | Not enough data | 
| **Optimization** | 7.8 (411 reviews) | Not enough data | Not enough data | 

#### Personalization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Recommendation** | 7.6 (400 reviews) | Not enough data | Not enough data | 
| **Content** | 7.6 (404 reviews) | Not enough data | Not enough data | 
| **Cart Abandonment** | 7.2 (360 reviews) | Not enough data | Not enough data | 
| **Search** | 7.1 (346 reviews) | Not enough data | Not enough data | 
| **Personalization Engine** | 7.3 (336 reviews) | Not enough data | Not enough data | 
| **Product Recommendations** | 7.1 (324 reviews) | Not enough data | Not enough data | 
| **A/B Testing** | 7.4 (346 reviews) | Not enough data | Not enough data | 
| **Personalized Messaging** | 8.0 (396 reviews) | Not enough data | Not enough data | 

#### Multichannel

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Web** | 7.4 (379 reviews) | Not enough data | Not enough data | 
| **Email** | 8.5 (463 reviews) | Not enough data | Not enough data | 
| **Mobile** | 7.6 (419 reviews) | Not enough data | Not enough data | 

#### Administration 

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Marketing Campaigns** | 8.5 (481 reviews) | Not enough data | Not enough data | 
| **Reports & Analytics** | 7.9 (469 reviews) | Not enough data | Not enough data | 
| **User Data** | 7.9 (439 reviews) | Not enough data | Not enough data | 
| **Integrations** | 8.0 (461 reviews) | Not enough data | Not enough data | 

#### Agentic AI - E-Commerce Personalization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Natural Language Interaction** | 7.6 (13 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 7.6 (13 reviews) | Not enough data | Not enough data | 

### AI Writing Assistant

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 8.3/10 | 87 |
| **Klaviyo** | N/A | N/A |

#### Grammar

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Grammar Check** | Not enough data | 8.5 (77 reviews) | Not enough data | 
| **Tone Check** | Not enough data | 8.3 (70 reviews) | Not enough data | 
| **Sentence Formatting** | Not enough data | 8.5 (72 reviews) | Not enough data | 

#### Formatting

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Plagiarism Check** | Not enough data | 8.2 (66 reviews) | Not enough data | 
| **Style Editor** | Not enough data | 8.1 (70 reviews) | Not enough data | 
| **Citation Finder** | Not enough data | 7.7 (66 reviews) | Not enough data | 

#### Content 

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Idea Recommendation** | Not enough data | 8.1 (68 reviews) | Not enough data | 
| **Content Generation** | Not enough data | 8.3 (71 reviews) | Not enough data | 
| **Form Generation** | Not enough data | 8.2 (67 reviews) | Not enough data | 

#### Product Type

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Standalone Application** | Not enough data | 8.7 (69 reviews) | Not enough data | 
| **Plugin** | Not enough data | 7.9 (65 reviews) | Not enough data | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | 8.5 (24 reviews) | Not enough data | 
| **AI Text Summarization** | Not enough data | 8.7 (24 reviews) | Not enough data | 

### Email Template Builder

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.1/10 | 2445 |
| **Constant Contact** | 7.8/10 | 1177 |
| **Klaviyo** | 8.1/10 | 501 |

#### Templates

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Text and Themes** | 7.7 (2022 reviews) | 8.1 (1059 reviews) ✓ Verified | 8.6 (427 reviews) ✓ Verified | 
| **Stock Images** | 6.3 (1517 reviews) | 7.2 (917 reviews) ✓ Verified | Feature Not Available | 
| **Proofing** | 7.0 (1618 reviews) | 7.9 (971 reviews) ✓ Verified | 8.4 (348 reviews) ✓ Verified | 
| **Mobile Responsive** | 7.5 (1682 reviews) | 8.3 (592 reviews) | 8.8 (259 reviews) | 

#### Edit

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Pre-Made** | 7.4 (1756 reviews) | 8.2 (955 reviews) ✓ Verified | 8.4 (359 reviews) ✓ Verified | 
| **Build** | 8.0 (1970 reviews) | 8.4 (1046 reviews) ✓ Verified | 8.8 (422 reviews) ✓ Verified | 
| **HTML** | 7.4 (1664 reviews) | 7.9 (843 reviews) ✓ Verified | 8.3 (334 reviews) ✓ Verified | 

#### Logistics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Analytics** | 7.8 (1819 reviews) | 8.6 (1030 reviews) ✓ Verified | 8.7 (428 reviews) ✓ Verified | 
| **Issues** | 7.0 (1582 reviews) | 7.7 (877 reviews) ✓ Verified | 7.9 (340 reviews) ✓ Verified | 
| **Integrations** | 7.8 (1777 reviews) | 7.9 (811 reviews) ✓ Verified | 8.8 (402 reviews) ✓ Verified | 
| **Shareable Link** | 7.8 (1545 reviews) | 8.8 (603 reviews) | 8.4 (198 reviews) | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | 6.0 (840 reviews) | 7.3 (158 reviews) | 7.5 (66 reviews) | 
| **AI Text Summarization** | 6.1 (676 reviews) | 7.3 (154 reviews) | 7.4 (52 reviews) | 

#### Agentic AI - Email Template Builder

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.2 (110 reviews) | 6.9 (94 reviews) | 6.4 (19 reviews) | 
| **Cross-system Integration** | 6.2 (109 reviews) | 6.8 (93 reviews) | 7.0 (19 reviews) | 

### Event Marketing

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 7.5/10 | 845 |
| **Klaviyo** | N/A | N/A |

#### Marketing and Communications

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lead generation and retrieval** | Not enough data | 8.2 (598 reviews) | Not enough data | 
| **Social media promotion** | Not enough data | 8.1 (625 reviews) | Not enough data | 
| **Event website creation** | Not enough data | 7.9 (559 reviews) | Not enough data | 
| **Email customization** | Not enough data | 8.7 (760 reviews) | Not enough data | 
| **Contact list management** | Not enough data | 8.9 (774 reviews) | Not enough data | 

#### Attendee Engagement

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Social media integrations** | Not enough data | 8.0 (619 reviews) | Not enough data | 
| **Attendee networking** | Not enough data | 7.8 (551 reviews) | Not enough data | 
| **Attendee surveys-attendee engagement** | Not enough data | 7.9 (560 reviews) | Not enough data | 

#### Registration

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Event creation** | Not enough data | 8.1 (615 reviews) | Not enough data | 
| **User registration process** | Not enough data | 8.1 (603 reviews) | Not enough data | 
| **Mobile check-in** | Not enough data | 7.7 (490 reviews) | Not enough data | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | 7.2 (137 reviews) | Not enough data | 

#### Agentic AI - Event Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.5 (104 reviews) | Not enough data | 
| **Multi-step Planning** | Not enough data | 6.5 (105 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.5 (106 reviews) | Not enough data | 
| **Adaptive Learning** | Not enough data | 6.5 (106 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 6.5 (106 reviews) | Not enough data | 
| **Decision Making** | Not enough data | 6.6 (109 reviews) | Not enough data | 

### SMS Marketing

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.8/10 | 248 |
| **Constant Contact** | 7.8/10 | 88 |
| **Klaviyo** | 8.0/10 | 172 |

#### Text Messaging

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Bulk SMS** | 7.5 (161 reviews) | 8.6 (73 reviews) | 8.6 (151 reviews) | 
| **Two-Way Text Messaging** | 6.9 (141 reviews) | 7.8 (64 reviews) | 8.1 (101 reviews) | 
| **Text Scheduler** | 7.6 (155 reviews) | 8.4 (68 reviews) | 8.8 (133 reviews) ✓ Verified | 
| **Automatic Replies** | 7.6 (144 reviews) | 8.4 (70 reviews) | 8.3 (115 reviews) ✓ Verified | 
| **Automatic URL Shortening** | 7.3 (132 reviews) | 8.4 (67 reviews) | 8.7 (126 reviews) ✓ Verified | 
| **MMS Marketing** | Feature Not Available | 8.1 (67 reviews) | 8.5 (107 reviews) | 
| **Personalization** | 8.2 (171 reviews) | 8.5 (74 reviews) | 8.9 (135 reviews) ✓ Verified | 
| **Transactional SMS** | 7.1 (144 reviews) | 7.8 (64 reviews) | 8.7 (55 reviews) | 

#### SMS Platform

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Reporting** | 7.7 (156 reviews) | 8.7 (75 reviews) | 8.6 (135 reviews) ✓ Verified | 
| **Automation** | 8.8 (174 reviews) | 8.8 (69 reviews) | 8.9 (135 reviews) ✓ Verified | 
| **White Label** | 7.6 (130 reviews) | 7.7 (66 reviews) | Feature Not Available | 
| **Text-to-Landline** | 6.8 (123 reviews) | 6.7 (62 reviews) | Feature Not Available | 
| **Short Codes** | 7.0 (125 reviews) | 7.2 (62 reviews) | 8.3 (63 reviews) | 
| **API Integration** | 8.0 (146 reviews) | 7.4 (63 reviews) | 8.8 (111 reviews) ✓ Verified | 

#### Agentic AI - SMS Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 8.4 (20 reviews) | 6.4 (12 reviews) | 6.8 (11 reviews) | 
| **Multi-step Planning** | 8.5 (20 reviews) | 7.5 (12 reviews) | 6.7 (10 reviews) | 
| **Cross-system Integration** | 8.5 (20 reviews) | 6.8 (12 reviews) | 6.8 (10 reviews) | 
| **Natural Language Interaction** | 8.3 (20 reviews) | 7.4 (12 reviews) | 6.7 (10 reviews) | 
| **Proactive Assistance** | 8.4 (20 reviews) | 7.1 (12 reviews) | 6.8 (10 reviews) | 
| **Decision Making** | 8.2 (20 reviews) | 7.2 (12 reviews) | 7.0 (10 reviews) | 

### Customer Data Platform (CDP)

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 8.4/10 | 131 |

#### Data Sourcing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Data Enrichment** | Not enough data | Not enough data | 8.4 (76 reviews) | 
| **Expandability** | Not enough data | Not enough data | 8.3 (68 reviews) | 
| **Content Marketing** | Not enough data | Not enough data | 8.5 (96 reviews) | 
| **Multiple Devices** | Not enough data | Not enough data | 8.5 (91 reviews) | 

#### Intelligence

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Marketing Metrics** | Not enough data | Not enough data | 8.6 (105 reviews) | 
| **Predictive Modeling** | Not enough data | Not enough data | 8.1 (73 reviews) | 
| **Recommendation Engine** | Not enough data | Not enough data | 8.0 (68 reviews) | 

### Pop-Up Builder

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.5/10 | 256 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 8.5/10 | 31 |

#### Design and Customization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Pre-Designed Templates** | 7.7 (203 reviews) | Not enough data | 9.0 (24 reviews) | 
| **Pop-Up Types** | 7.6 (198 reviews) | Not enough data | 8.9 (25 reviews) | 
| **No-Code Customization** | 8.1 (180 reviews) | Not enough data | 9.1 (24 reviews) | 
| **Mobile Optimized** | 8.0 (190 reviews) | Not enough data | 8.9 (22 reviews) | 

#### Campaigns

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Targeting** | 7.9 (169 reviews) | Not enough data | 8.8 (24 reviews) | 
| **Triggered Campaigns** | 8.3 (180 reviews) | Not enough data | 8.9 (22 reviews) | 
| **A/B Testing** | 7.9 (147 reviews) | Not enough data | 8.8 (24 reviews) | 
| **Analytics** | 7.8 (181 reviews) | Not enough data | 8.8 (25 reviews) | 

#### Integrations

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **CRM/Email Integrations** | 8.1 (173 reviews) | Not enough data | 9.1 (23 reviews) | 
| **WCM Integrations** | 6.7 (116 reviews) | Not enough data | 8.1 (19 reviews) | 
| **E-Commerce Integrations** | 7.9 (131 reviews) | Not enough data | 9.1 (25 reviews) | 
| **Social Media Integrations** | 7.3 (144 reviews) | Not enough data | 8.5 (20 reviews) | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | 6.1 (65 reviews) | Not enough data | 7.5 (20 reviews) | 

#### Agentic AI - Vulnerability Scanner

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 6.6 (16 reviews) | Not enough data | 6.8 (10 reviews) | 
| **Proactive Assistance** | 6.9 (16 reviews) | Not enough data | 7.5 (10 reviews) | 

### Attribution

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.3/10 | 348 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Attribution Modeling

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Single-Touch Attribution** | 7.1 (207 reviews) | Not enough data | Not enough data | 
| **Multi-Touch Attribution** | 7.1 (199 reviews) | Not enough data | Not enough data | 
| **Algorithmic Attribution** | 6.8 (190 reviews) | Not enough data | Not enough data | 
| **Cross-Device Attribution** | 6.8 (189 reviews) | Not enough data | Not enough data | 
| **Offline Attribution** | 6.3 (176 reviews) | Not enough data | Not enough data | 
| **Custom Attribution** | 7.0 (190 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Attribution

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.6 (9 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 7.8 (9 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 7.8 (9 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 8.3 (8 reviews) | Not enough data | Not enough data | 

#### Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **B2B Attribution** | 7.2 (199 reviews) | Not enough data | Not enough data | 
| **B2C Attribution** | 7.1 (195 reviews) | Not enough data | Not enough data | 
| **Marketing Channels** | 7.3 (211 reviews) | Not enough data | Not enough data | 
| **Integrations** | 7.9 (250 reviews) | Not enough data | Not enough data | 

#### Reporting

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Dashboards** | 7.5 (283 reviews) | Not enough data | Not enough data | 
| **Data Visualizations** | 7.3 (264 reviews) | Not enough data | Not enough data | 
| **Custom Reporting** | 7.0 (250 reviews) | Not enough data | Not enough data | 

### Social Media Management

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 7.9/10 | 220 |
| **Klaviyo** | N/A | N/A |

#### Content & Collaboration

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Content Calendar** | Not enough data | 8.8 (179 reviews) | Not enough data | 
| **Content Library** | Not enough data | 8.7 (185 reviews) | Not enough data | 
| **Shared Inbox** | Not enough data | 8.3 (161 reviews) | Not enough data | 
| **Approval Workflows** | Not enough data | Feature Not Available | Not enough data | 
| **Users and Permissions** | Not enough data | Feature Not Available | Not enough data | 
| **Content Creation** | Not enough data | 8.7 (182 reviews) | Not enough data | 

#### Social Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Social Analytics** | Not enough data | 8.6 (201 reviews) | Not enough data | 
| **Social Publishing** | Not enough data | 8.8 (204 reviews) | Not enough data | 
| **Campaign Optimization** | Not enough data | Feature Not Available | Not enough data | 
| **Social Engagement** | Not enough data | 8.7 (196 reviews) | Not enough data | 
| **Social Ads** | Not enough data | 8.1 (183 reviews) | Not enough data | 
| **Campaign Planning** | Not enough data | 8.8 (187 reviews) | Not enough data | 
| **Hashtag Capabilites** | Not enough data | 8.4 (148 reviews) | Not enough data | 

#### Agentic AI - Social Media Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 6.8 (59 reviews) | Not enough data | 
| **Multi-step Planning** | Not enough data | 6.9 (59 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 6.8 (58 reviews) | Not enough data | 
| **Adaptive Learning** | Not enough data | 7.0 (58 reviews) | Not enough data | 
| **Natural Language Interaction** | Not enough data | 7.0 (57 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 6.9 (56 reviews) | Not enough data | 
| **Decision Making** | Not enough data | 6.8 (56 reviews) | Not enough data | 

### Customer Journey Analytics

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 7.9/10 | 21 |

#### Platform Basics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Dynamic Segmentation** | Not enough data | Not enough data | 9.0 (17 reviews) | 
| **Journey Optimization** | Not enough data | Not enough data | 9.0 (16 reviews) | 

#### Platform Data

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Journey Reporting** | Not enough data | Not enough data | 8.5 (16 reviews) | 
| **Trends Reporting** | Not enough data | Not enough data | 8.3 (15 reviews) | 
| **Dashboards** | Not enough data | Not enough data | 8.8 (15 reviews) | 
| **Advanced Data Filtering** | Not enough data | Not enough data | 8.2 (15 reviews) | 

#### Platform Additional Functionality

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Journey Mapping** | Not enough data | Not enough data | 8.4 (16 reviews) | 
| **Integrations** | Not enough data | Not enough data | 9.2 (14 reviews) | 
| **Automated Alerts** | Not enough data | Not enough data | 8.3 (14 reviews) | 

#### Agentic AI - Customer Journey Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 6.0 (5 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.0 (5 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 6.3 (5 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 6.9 (6 reviews) | 

### Social Media Advertising

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.9/10 | 471 |
| **Constant Contact** | 8.3/10 | 347 |
| **Klaviyo** | N/A | N/A |

#### Platform Interoperability

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Close Ecosystem API** | 7.8 (201 reviews) | Feature Not Available | Not enough data | 

#### Agentic AI - Social Media Advertising

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.0 (17 reviews) | 6.6 (38 reviews) | Not enough data | 
| **Multi-step Planning** | 7.3 (17 reviews) | 6.8 (38 reviews) | Not enough data | 
| **Cross-system Integration** | 7.3 (17 reviews) | 6.6 (38 reviews) | Not enough data | 
| **Adaptive Learning** | 7.0 (17 reviews) | 7.3 (39 reviews) | Not enough data | 
| **Proactive Assistance** | 6.9 (17 reviews) | 7.3 (37 reviews) | Not enough data | 
| **Decision Making** | 7.3 (17 reviews) | 7.3 (37 reviews) | Not enough data | 

#### Social Functionality

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Social Functionality** | 7.9 (300 reviews) | 8.8 (300 reviews) | Not enough data | 

#### Campaign Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Campaign Dashboard** | 8.3 (348 reviews) | 9.0 (307 reviews) | Not enough data | 
| **Campaign Optimization** | 8.3 (320 reviews) | 8.9 (290 reviews) | Not enough data | 
| **Reach** | 8.1 (305 reviews) | 8.9 (286 reviews) | Not enough data | 
| **Bulk Editing** | 7.8 (284 reviews) | 8.4 (246 reviews) | Not enough data | 
| **Batch Uploading** | 7.9 (273 reviews) | 8.6 (250 reviews) | Not enough data | 
| **Brand Safety** | 8.3 (264 reviews) | 8.9 (253 reviews) | Not enough data | 
| **Fraud Protection** | 8.2 (257 reviews) | 9.0 (240 reviews) | Not enough data | 
| **Frequency Capping** | 7.9 (238 reviews) | 8.4 (221 reviews) | Not enough data | 
| **Budget Pacing** | 7.7 (230 reviews) | 8.4 (232 reviews) | Not enough data | 
| **Creative Optimization** | 7.9 (264 reviews) | 8.7 (256 reviews) | Not enough data | 
| **Rich Media Capabilties** | 7.8 (238 reviews) | 8.3 (243 reviews) | Not enough data | 
| **In-App Ads** | 7.5 (220 reviews) | 8.0 (210 reviews) | Not enough data | 
| **Mobile Rich Media Capabilities** | 7.7 (222 reviews) | 8.3 (223 reviews) | Not enough data | 

#### Targeting

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Targeting** | 8.3 (294 reviews) | 8.8 (270 reviews) | Not enough data | 
| **Retargeting** | 8.3 (282 reviews) | 8.7 (252 reviews) | Not enough data | 
| **Geo-Targeting** | 7.8 (255 reviews) | 8.2 (221 reviews) | Not enough data | 
| **Contextual Targeting** | 8.0 (249 reviews) | 8.5 (223 reviews) | Not enough data | 

#### Platform

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **API / Integrations** | 8.2 (308 reviews) | 8.2 (231 reviews) | Not enough data | 
| **Custom Reports** | 8.0 (287 reviews) | 8.5 (265 reviews) | Not enough data | 
| **User, Role, and Access Management** | 8.5 (300 reviews) | 8.7 (273 reviews) | Not enough data | 
| **Performance and Reliability** | 8.5 (336 reviews) | 9.0 (302 reviews) | Not enough data | 
| **Enterprise Scalability** | 8.4 (270 reviews) | 8.5 (242 reviews) | Not enough data | 
| **Customization** | 8.3 (302 reviews) | 8.6 (295 reviews) | Not enough data | 
| **Workflow Capability** | 8.6 (297 reviews) | 8.7 (256 reviews) | Not enough data | 
| **Internationalization** | 8.1 (242 reviews) | 8.4 (227 reviews) | Not enough data | 
| **Notifications** | 8.1 (286 reviews) | 8.7 (276 reviews) | Not enough data | 

### Landing Page Builders

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.6/10 | 722 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Page Customization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Drag and Drop** | 8.2 (586 reviews) | Not enough data | Not enough data | 
| **Templates** | 7.9 (612 reviews) | Not enough data | Not enough data | 
| **Advanced Customization** | 7.8 (530 reviews) | Not enough data | Not enough data | 
| **Content Library** | 7.6 (552 reviews) | Not enough data | Not enough data | 

#### Page Optimization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **A/B Testing** | 7.6 (425 reviews) | Not enough data | Not enough data | 
| **Mobile Responsive** | 7.8 (529 reviews) | Not enough data | Not enough data | 
| **Web Analytics** | 7.5 (472 reviews) | Not enough data | Not enough data | 
| **SEO** | 7.2 (413 reviews) | Not enough data | Not enough data | 

#### Integrations

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **E-Commerce Integration** | 7.5 (405 reviews) | Not enough data | Not enough data | 
| **Email Marketing Integration** | 8.5 (542 reviews) | Not enough data | Not enough data | 
| **Domain Integration** | 8.2 (515 reviews) | Not enough data | Not enough data | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | 6.2 (166 reviews) | Not enough data | Not enough data | 

#### Agentic AI - Landing Page Builders

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Cross-system Integration** | 6.7 (22 reviews) | Not enough data | Not enough data | 

### Review Management

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 8.6/10 | 10 |

#### Collection

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Authentification** | Not enough data | Not enough data | 7.4 (7 reviews) | 
| **Review Forms** | Not enough data | Not enough data | 8.8 (7 reviews) | 
| **Personalization** | Not enough data | Not enough data | 8.6 (6 reviews) | 
| **Engagement** | Not enough data | Not enough data | 8.6 (6 reviews) | 
| **Community Q&A** | Not enough data | Not enough data | 7.2 (6 reviews) | 

#### Agentic AI - Review Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 

#### Moderation

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Reviewer Validation** | Not enough data | Not enough data | 9.5 (7 reviews) | 
| **Response Types** | Not enough data | Not enough data | 9.0 (5 reviews) | 
| **Legal Agreements** | Not enough data | Not enough data | 9.3 (5 reviews) | 

#### Use Cases

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **E-commerce** | Not enough data | Not enough data | 9.8 (9 reviews) | 
| **Retail** | Not enough data | Not enough data | 8.9 (6 reviews) | 
| **Customer Service** | Not enough data | Not enough data | 9.7 (5 reviews) | 

#### Administration

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Incentives** | Not enough data | Not enough data | 9.3 (7 reviews) | 
| **Syndication** | Not enough data | Not enough data | 8.6 (6 reviews) | 
| **Insights** | Not enough data | Not enough data | 8.0 (5 reviews) | 
| **Content** | Not enough data | Not enough data | 8.0 (5 reviews) | 
| **Sampling** | Not enough data | Not enough data | 8.0 (5 reviews) | 

#### Display Options

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Badges** | Not enough data | Not enough data | 8.6 (6 reviews) | 
| **Widgets** | Not enough data | Not enough data | 8.3 (7 reviews) | 
| **Integration & APIs** | Not enough data | Not enough data | 8.3 (6 reviews) | 
| **Marketing** | Not enough data | Not enough data | 8.1 (6 reviews) | 

#### Generative AI

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | 7.8 (6 reviews) | 

### Survey

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 8.0/10 | 294 |
| **Klaviyo** | N/A | N/A |

#### Survey Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Survey Builder** | Not enough data | 8.3 (265 reviews) | Not enough data | 
| **Question Types** | Not enough data | 8.4 (254 reviews) | Not enough data | 
| **Templates** | Not enough data | Feature Not Available | Not enough data | 
| **Survey Distribution** | Not enough data | 8.6 (252 reviews) | Not enough data | 

#### Survey Customization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Branching/Skip Logic** | Not enough data | Feature Not Available | Not enough data | 
| **Branding** | Not enough data | 8.5 (250 reviews) | Not enough data | 
| **Multimedia Support** | Not enough data | 8.2 (234 reviews) | Not enough data | 
| **Multilingual Surveys** | Not enough data | Feature Not Available | Not enough data | 

#### Survey Insights

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Reporting & Analytics** | Not enough data | 8.5 (262 reviews) | Not enough data | 
| **BI Tools Integration** | Not enough data | Feature Not Available | Not enough data | 
| **Data Exporting** | Not enough data | 8.6 (251 reviews) | Not enough data | 
| **Permissions** | Not enough data | Feature Not Available | Not enough data | 

#### Agentic AI - Survey

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Adaptive Learning** | Not enough data | 6.9 (50 reviews) | Not enough data | 
| **Proactive Assistance** | Not enough data | 6.7 (50 reviews) | Not enough data | 
| **Decision Making** | Not enough data | 6.9 (50 reviews) | Not enough data | 

### Online Form Builder

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.2/10 | 766 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 7.4/10 | 6 |

#### Customization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Custom Fields** | 8.0 (663 reviews) | Not enough data | Not enough data | 
| **Conditional Logic** | 7.5 (553 reviews) | Not enough data | 8.6 (6 reviews) | 
| **Multi-page Forms** | 6.8 (464 reviews) | Not enough data | 7.0 (5 reviews) | 
| **Design** | 7.4 (653 reviews) | Not enough data | 6.7 (5 reviews) | 

#### Additional Functionality

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Embedded Forms** | 7.9 (672 reviews) | Not enough data | 7.0 (5 reviews) | 
| **Offline Capability** | 5.7 (423 reviews) | Not enough data | 7.7 (5 reviews) | 
| **Notifications** | 7.4 (531 reviews) | Not enough data | Not enough data | 
| **Payments** | 6.2 (433 reviews) | Not enough data | Not enough data | 
| **Mobile Forms** | 7.0 (507 reviews) | Not enough data | Not enough data | 

### WhatsApp Marketing

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 8.2/10 | 12 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### WhatsApp Messaging - WhatsApp Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Transactional Messages** | 8.3 (11 reviews) | Not enough data | Not enough data | 
| **Bulk WhatsApp Messaging** | 7.9 (11 reviews) | Not enough data | Not enough data | 
| **Conversational Messaging** | 8.0 (11 reviews) | Not enough data | Not enough data | 
| **Personalization** | 8.5 (11 reviews) | Not enough data | Not enough data | 
| **Promotional Messages** | 8.0 (11 reviews) | Not enough data | Not enough data | 
| **Automated Replies** | 8.0 (11 reviews) | Not enough data | Not enough data | 

#### WhatsApp Business Platform - WhatsApp Marketing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Segmentation** | 8.5 (11 reviews) | Not enough data | Not enough data | 
| **API Integration** | 8.3 (11 reviews) | Not enough data | Not enough data | 
| **WhatsApp Commerce** | 8.2 (11 reviews) | Not enough data | Not enough data | 
| **Analytics** | 8.2 (11 reviews) | Not enough data | Not enough data | 

### Lead Scoring

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.6/10 | 601 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Agentic AI - Lead Scoring

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.0 (26 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 7.0 (26 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 7.0 (26 reviews) | Not enough data | Not enough data | 
| **Decision Making** | 7.2 (26 reviews) | Not enough data | Not enough data | 

#### Attribution

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lead Opportunity** | 8.1 (433 reviews) | Not enough data | Not enough data | 
| **Lead Assignment** | 8.2 (410 reviews) | Not enough data | Not enough data | 
| **Pipeline Acceleration** | 8.0 (392 reviews) | Not enough data | Not enough data | 

#### Discovery

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lead Management** | 8.1 (444 reviews) | Not enough data | Not enough data | 
| **Scoring/Ranking** | 8.2 (451 reviews) | Not enough data | Not enough data | 
| **Lead Context** | 8.0 (400 reviews) | Not enough data | Not enough data | 

#### Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Conversion Viability** | 8.0 (385 reviews) | Not enough data | Not enough data | 
| **Workflow** | 8.3 (427 reviews) | Not enough data | Not enough data | 

#### Platform

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Data Synchronization** | 8.1 (406 reviews) | Not enough data | Not enough data | 
| **Analysis** | 8.1 (435 reviews) | Not enough data | Not enough data | 

### Personalization

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 6.9/10 | 17 |

#### Agentic AI - Personalization

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 6.9 (14 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.0 (14 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 6.9 (15 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | 6.8 (14 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 6.3 (14 reviews) | 
| **Decision Making** | Not enough data | Not enough data | 7.4 (16 reviews) | 

### Salesforce AppExchange Apps

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Agentic AI - Salesforce AppExchange Apps

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Sales Analytics

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | 7.7/10 | 464 |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Agentic AI - Sales Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | 8.2 (19 reviews) | Not enough data | Not enough data | 
| **Cross-system Integration** | 8.1 (19 reviews) | Not enough data | Not enough data | 
| **Adaptive Learning** | 8.1 (19 reviews) | Not enough data | Not enough data | 
| **Natural Language Interaction** | 7.8 (19 reviews) | Not enough data | Not enough data | 
| **Proactive Assistance** | 8.3 (19 reviews) | Not enough data | Not enough data | 

#### Data Sourcing

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Data Sourcing** | 7.8 (286 reviews) | Not enough data | Not enough data | 
| **Exporting & Sharing Data** | 7.9 (314 reviews) | Not enough data | Not enough data | 
| **Multi-Device Data Visualization** | 7.8 (270 reviews) | Not enough data | Not enough data | 
| **Interactive Dashboards** | 7.9 (309 reviews) | Not enough data | Not enough data | 
| **Data Segmentation** | 8.1 (331 reviews) | Not enough data | Not enough data | 

#### Predictive Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lead Scoring** | 8.0 (293 reviews) | Not enough data | Not enough data | 
| **Opportunity Scoring** | 7.8 (277 reviews) | Not enough data | Not enough data | 
| **Risk Analysis** | 7.3 (241 reviews) | Not enough data | Not enough data | 
| **Live Forecasting** | 7.4 (267 reviews) | Not enough data | Not enough data | 

#### Sales Management

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Live Pipeline Management** | 8.2 (319 reviews) | Not enough data | Not enough data | 
| **Sales Gamification** | 7.6 (181 reviews) | Not enough data | Not enough data | 
| **Account-Based Analytics** | 8.0 (305 reviews) | Not enough data | Not enough data | 
| **Activity Tracking** | 8.3 (350 reviews) | Not enough data | Not enough data | 

### RCS Business Messaging

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Messaging - RCS Business Messaging

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Personalization** | Not enough data | Not enough data | Not enough data | 
| **Rich Media** | Not enough data | Not enough data | Not enough data | 
| **Interactive Messages** | Not enough data | Not enough data | Not enough data | 
| **Branded Templates** | Not enough data | Not enough data | Not enough data | 
| **Automation** | Not enough data | Not enough data | Not enough data | 
| **Conversational RCS** | Not enough data | Not enough data | Not enough data | 
| **Transactional RCS** | Not enough data | Not enough data | Not enough data | 
| **Promotional RCS** | Not enough data | Not enough data | Not enough data | 

#### Security / Verification - RCS Business Messaging

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Verified Sender** | Not enough data | Not enough data | Not enough data | 
| **Encryption** | Not enough data | Not enough data | Not enough data | 
| **Authentification** | Not enough data | Not enough data | Not enough data | 

#### Analytics / Deliverability - RCS Business Messaging

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Read Receipts** | Not enough data | Not enough data | Not enough data | 
| **Analytics** | Not enough data | Not enough data | Not enough data | 
| **SMS Fallback** | Not enough data | Not enough data | Not enough data | 

#### AI - RCS Business Messaging

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **AI** | Not enough data | Not enough data | Not enough data | 

### AI Marketing Agents

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Performance Optimization & Learning - AI Marketing Agents

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Send-Time Optimization** | Not enough data | Not enough data | Not enough data | 
| **Autonomous A/B Testing** | Not enough data | Not enough data | Not enough data | 

#### Autonomous Campaign Orchestration - AI Marketing Agents 

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **End-to-End Campaign Execution** | Not enough data | Not enough data | Not enough data | 
| **Goal-Based Campaign Planning** | Not enough data | Not enough data | Not enough data | 
| **Cross-Channel Orchestration** | Not enough data | Not enough data | Not enough data | 
| **Conversational Campaign Setup** | Not enough data | Not enough data | Not enough data | 
| **Real-Time Campaign Adaptation** | Not enough data | Not enough data | Not enough data | 

#### AI Content Generation - AI Marketing Agents 

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Dynamic Content Optimization** | Not enough data | Not enough data | Not enough data | 
| **AI Copy Generation** | Not enough data | Not enough data | Not enough data | 
| **Personalized Content Creation** | Not enough data | Not enough data | Not enough data | 

#### Audience Intelligence & Segmentation - AI Marketing Agents 

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Lookalike Audience Modeling** | Not enough data | Not enough data | Not enough data | 
| **Behavioral Triggering** | Not enough data | Not enough data | Not enough data | 
| **Predictive Audience Segmentation** | Not enough data | Not enough data | Not enough data | 

#### Integrations & Data Connectivity - AI Marketing Agents 

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Event & Data Ingestion** | Not enough data | Not enough data | Not enough data | 
| **CRM & CDP Integration** | Not enough data | Not enough data | Not enough data | 

### Account-Based Execution

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Marketing Distribution

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Segmentation ** | Not enough data | Not enough data | Not enough data | 
| **Personalized Messaging ** | Not enough data | Not enough data | Not enough data | 
| **Website Personalization ** | Not enough data | Not enough data | Not enough data | 
| **Email Campaigns ** | Not enough data | Not enough data | Not enough data | 
| **Digital Advertising** | Not enough data | Not enough data | Not enough data | 
| **Direct Mail** | Not enough data | Not enough data | Not enough data | 

#### Campaign Planning

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Strategy Mapping ** | Not enough data | Not enough data | Not enough data | 
| **Prioritized Accounts ** | Not enough data | Not enough data | Not enough data | 
| **Trending Accounts ** | Not enough data | Not enough data | Not enough data | 
| **Sales Activation** | Not enough data | Not enough data | Not enough data | 

#### Integrations

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Ad Network Integrations ** | Not enough data | Not enough data | Not enough data | 
| **Buyer Intent Data Integration** | Not enough data | Not enough data | Not enough data | 
| **Marketing Automation Integration** | Not enough data | Not enough data | Not enough data | 
| **CRM Integration** | Not enough data | Not enough data | Not enough data | 

### Marketing Analytics

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | 7.8/10 | 27 |

#### Marketing Operations

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **ROI Tracking** | Not enough data | Not enough data | 8.5 (19 reviews) | 
| **Data Collection** | Not enough data | Not enough data | 8.4 (18 reviews) | 
| **Customer Insights** | Not enough data | Not enough data | 8.8 (20 reviews) | 
| **Multi-User Access** | Not enough data | Not enough data | 8.8 (17 reviews) | 
| **Spend Management** | Not enough data | Not enough data | 7.3 (16 reviews) | 
| **White Label** | Not enough data | Not enough data | 7.6 (15 reviews) | 

#### Campaign Activity

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Campaign Insights** | Not enough data | Not enough data | 8.1 (18 reviews) | 
| **Reports and Dashboards** | Not enough data | Not enough data | 8.5 (23 reviews) | 
| **Campaign Stickiness** | Not enough data | Not enough data | 8.1 (17 reviews) | 
| **Multichannel Tracking** | Not enough data | Not enough data | 7.5 (17 reviews) | 
| **Brand Optimization** | Not enough data | Not enough data | 8.1 (17 reviews) | 
| **Predictive Analytics** | Not enough data | Not enough data | 8.1 (16 reviews) | 

#### Agentic AI - Marketing Analytics

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 7.6 (7 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.6 (7 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 7.9 (8 reviews) | 

### Website Builder

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | 9.2/10 | 53 |
| **Klaviyo** | N/A | N/A |

#### Customizations

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Templates** | Not enough data | Feature Not Available | Not enough data | 
| **Drag and Drop** | Not enough data | Feature Not Available | Not enough data | 
| **HTML Input** | Not enough data | Feature Not Available | Not enough data | 
| **Domain Name** | Not enough data | Feature Not Available | Not enough data | 

#### Growth

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **SEO** | Not enough data | Feature Not Available | Not enough data | 
| **Site Analytics** | Not enough data | Feature Not Available | Not enough data | 
| **Marketing Tools** | Not enough data | Feature Not Available | Not enough data | 
| **E-Commerce** | Not enough data | Feature Not Available | Not enough data | 
| **Hosting** | Not enough data | Feature Not Available | Not enough data | 

#### Content

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Email Integrations** | Not enough data | Feature Not Available | Not enough data | 
| **Content Management** | Not enough data | Feature Not Available | Not enough data | 
| **Permissions** | Not enough data | Feature Not Available | Not enough data | 
| **WordPress Tool** | Not enough data | Feature Not Available | Not enough data | 

#### Support

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Customer Support** | Not enough data | 9.2 (45 reviews) | Not enough data | 

### AI Agents

| Product | Score | Reviews |
|---|---|---|
| **ActiveCampaign** | N/A | N/A |
| **Constant Contact** | N/A | N/A |
| **Klaviyo** | N/A | N/A |

#### Agentic AI - AI Agents

| Feature | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Multi-step Planning** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Natural Language Interaction** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

---
## Categories
**Shared Categories (3):** [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability), [SMS Marketing Software](https://www.g2.com/categories/sms-marketing), [Email Template Builder Software](https://www.g2.com/categories/email-template-builder)

**Unique to ActiveCampaign (15):** [AI Marketing Agents Software](https://www.g2.com/categories/ai-marketing-agents), [WhatsApp Marketing Software](https://www.g2.com/categories/whatsapp-marketing), [Marketing Automation Software](https://www.g2.com/categories/marketing-automation), [CRM Software](https://www.g2.com/categories/crm), [Pop-Up Builder Software](https://www.g2.com/categories/pop-up-builder), [E-Commerce Personalization Software](https://www.g2.com/categories/e-commerce-personalization), [Sales Engagement Software](https://www.g2.com/categories/sales-engagement), [Conversational Marketing Software](https://www.g2.com/categories/conversational-marketing), [Online Form Builder Software](https://www.g2.com/categories/online-form-builder), [Landing Page Builders](https://www.g2.com/categories/landing-page-builders), [Sales Analytics Software](https://www.g2.com/categories/sales-analytics), [Lead Scoring Software](https://www.g2.com/categories/lead-scoring), [Attribution Software](https://www.g2.com/categories/attribution), [Social Media Advertising Software](https://www.g2.com/categories/social-media-advertising), [Salesforce AppExchange Apps](https://www.g2.com/categories/salesforce-appexchange-apps)

**Unique to Constant Contact (7):** [Event Marketing Software](https://www.g2.com/categories/event-marketing), [AI Writing Assistants](https://www.g2.com/categories/ai-writing-assistant), [Website Builder Software](https://www.g2.com/categories/website-builder), [Social Media Advertising Software](https://www.g2.com/categories/social-media-advertising), [Social Media Management Tools](https://www.g2.com/categories/social-media-mgmt), [Email Marketing Software](https://www.g2.com/categories/email-marketing), [Survey Software](https://www.g2.com/categories/survey)

**Unique to Klaviyo (12):** [AI Marketing Agents Software](https://www.g2.com/categories/ai-marketing-agents), [Pop-Up Builder Software](https://www.g2.com/categories/pop-up-builder), [Personalization Software](https://www.g2.com/categories/personalization), [Conversational Marketing Software](https://www.g2.com/categories/conversational-marketing), [Customer Journey Analytics Software](https://www.g2.com/categories/customer-journey-analytics), [Customer Data Platforms (CDP)](https://www.g2.com/categories/customer-data-platform-cdp), [Marketing Analytics Software](https://www.g2.com/categories/marketing-analytics), [Review Management Software](https://www.g2.com/categories/review-management-software), [Marketing Automation Software](https://www.g2.com/categories/marketing-automation), [Online Form Builder Software](https://www.g2.com/categories/online-form-builder), [WhatsApp Marketing Software](https://www.g2.com/categories/whatsapp-marketing), [ RCS Business Messaging Software](https://www.g2.com/categories/rcs-business-messaging)


---
## Reviewer Demographics

### By Company Size

| Segment | ActiveCampaign | Constant Contact | Klaviyo | 
|---|---|---|---|
| **Small-Business** | 91.9% | 70.5% | 82.2% | 
| **Mid-Market** | 7.2% | 22.9% | 16.1% | 
| **Enterprise** | 1.0% | 6.6% | 1.7% | 

### By Industry

#### ActiveCampaign

- **Marketing and Advertising:** 14.4%
- **Health, Wellness and Fitness:** 11.3%
- **Professional Training & Coaching:** 9.2%
- **E-Learning:** 4.5%
- **Computer Software:** 3.3%
- **Financial Services:** 3.2%
- **Information Technology and Services:** 3.2%
- **Education Management:** 2.9%
- **Management Consulting:** 2.6%
- **Real Estate:** 2.6%
- **Other:** 42.9%

#### Constant Contact

- **Non-Profit Organization Management:** 12.5%
- **Marketing and Advertising:** 9.6%
- **Real Estate:** 4.4%
- **Education Management:** 4.0%
- **Religious Institutions:** 3.4%
- **Health, Wellness and Fitness:** 3.3%
- **Hospital & Health Care:** 2.9%
- **Retail:** 2.8%
- **Higher Education:** 2.7%
- **Information Technology and Services:** 2.3%
- **Other:** 52.1%

#### Klaviyo

- **Retail:** 19.4%
- **Marketing and Advertising:** 12.7%
- **Apparel & Fashion:** 12.5%
- **Consumer Goods:** 11.5%
- **Health, Wellness and Fitness:** 7.2%
- **Food & Beverages:** 4.7%
- **Cosmetics:** 2.8%
- **Luxury Goods & Jewelry:** 2.2%
- **Sporting Goods:** 1.6%
- **Consumer Electronics:** 1.5%
- **Other:** 23.9%

---
## Alternatives

### Alternatives to ActiveCampaign

- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2561 reviews)
- [Constant Contact Advanced Automation](https://www.g2.com/products/constant-contact-advanced-automation/reviews) — 4.4/5 stars (960 reviews)
- [HubSpot Marketing Hub](https://www.g2.com/products/hubspot-marketing-hub/reviews) — 4.4/5 stars (14739 reviews)
- [Freshsales](https://www.g2.com/products/freshsales/reviews) — 4.5/5 stars (1231 reviews)
- [Dotdigital](https://www.g2.com/products/dotdigital/reviews) — 4.4/5 stars (1199 reviews)
- [Ontraport](https://www.g2.com/products/ontraport/reviews) — 4.5/5 stars (224 reviews)
- [Intuit Mailchimp All-in-One Marketing Platform](https://www.g2.com/products/intuit-mailchimp-all-in-one-marketing-platform/reviews) — 4.4/5 stars (5420 reviews)
- [Agentforce Marketing (formerly Salesforce Marketing Cloud)](https://www.g2.com/products/agentforce-marketing-formerly-salesforce-marketing-cloud/reviews) — 4.0/5 stars (4460 reviews)
- [Omnisend](https://www.g2.com/products/omnisend/reviews) — 4.6/5 stars (1183 reviews)
- [GetResponse](https://www.g2.com/products/getresponse/reviews) — 4.3/5 stars (1120 reviews)

### Alternatives to Constant Contact

- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2561 reviews)
- [Intuit Mailchimp All-in-One Marketing Platform](https://www.g2.com/products/intuit-mailchimp-all-in-one-marketing-platform/reviews) — 4.4/5 stars (5420 reviews)
- [Dotdigital](https://www.g2.com/products/dotdigital/reviews) — 4.4/5 stars (1199 reviews)
- [GetResponse](https://www.g2.com/products/getresponse/reviews) — 4.3/5 stars (1120 reviews)
- [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews) — 4.1/5 stars (722 reviews)
- [Emma](https://www.g2.com/products/emma/reviews) — 4.0/5 stars (555 reviews)
- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12961 reviews)
- [MailerLite](https://www.g2.com/products/mailerlite/reviews) — 4.6/5 stars (1107 reviews)
- [Zoho Campaigns](https://www.g2.com/products/zoho-campaigns/reviews) — 4.3/5 stars (1036 reviews)
- [Google Workspace](https://www.g2.com/products/google-workspace/reviews) — 4.6/5 stars (47950 reviews)

### Alternatives to Klaviyo

- [Dotdigital](https://www.g2.com/products/dotdigital/reviews) — 4.4/5 stars (1199 reviews)
- [Braze](https://www.g2.com/products/braze/reviews) — 4.5/5 stars (1681 reviews)
- [Iterable](https://www.g2.com/products/iterable/reviews) — 4.4/5 stars (824 reviews)
- [Ortto](https://www.g2.com/products/ortto/reviews) — 4.4/5 stars (622 reviews)
- [Agentforce Marketing (formerly Salesforce Marketing Cloud)](https://www.g2.com/products/agentforce-marketing-formerly-salesforce-marketing-cloud/reviews) — 4.0/5 stars (4460 reviews)
- [Insider One](https://www.g2.com/products/insider-one/reviews) — 4.8/5 stars (1356 reviews)
- [Bloomreach](https://www.g2.com/products/bloomreach-bloomreach/reviews) — 4.6/5 stars (765 reviews)
- [HubSpot Marketing Hub](https://www.g2.com/products/hubspot-marketing-hub/reviews) — 4.4/5 stars (14739 reviews)
- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2561 reviews)
- [Omnisend](https://www.g2.com/products/omnisend/reviews) — 4.6/5 stars (1183 reviews)

---
## Top Discussions

### ActiveCampaign

- Title: [What is ActiveCampaign used for?](https://www.g2.com/discussions/what-is-activecampaign-used-for) — 20 comments
  > **Top comment:** "Email Marketing. "
- Title: [Does ActiveCampaign have a CRM?](https://www.g2.com/discussions/does-activecampaign-have-a-crm) — 7 comments
  > **Top comment:** "YES, for an additional charge"
- Title: [Is anyone able to tell me how to increase my conversion rate?](https://www.g2.com/discussions/is-anyone-able-to-tell-me-how-to-increase-my-conversion-rate) — 6 comments, 1 upvote
  > **Top comment:** "Heidi, which conversion rate are you trying to improve? There are multiple conversion points in any campaign. There's the open rate, click through rate, and..."
- Title: [How can I use goals effectively in my automations?](https://www.g2.com/discussions/26082-how-can-i-use-goals-effectively-in-my-automations) — 4 comments, 2 upvotes
  > **Top comment:** "Hi Max -  I'll paste the official AC definition here and then comment with an example:

"a Goal action is a way to move a contact to another location..."
- Title: [Why doesn't anyone have a YouTube channel exhausting all the uses and capabilities of ActiveCampaign? I would love to see a channel and I'd love to see the AC Consultants hosting their own meetups and pushing the platform but I guess that is just me!](https://www.g2.com/discussions/why-doesn-t-anyone-have-a-youtube-channel-exhausting-all-the-uses-and-capabilities-of-activecampaign-i-would-love-to-see-a-channel-and-i-d-love-to-see-the-ac-consultants-hosting-their-own-meetups-and-pushing-the-platform-but-i-guess-that-is-just-me) — 4 comments, 1 upvote
  > **Top comment:** "You're not alone, I'd love that too!"

### Constant Contact

- Title: [if i buy a email list of 10,000 can i send to all of those people at one time off your site?](https://www.g2.com/discussions/if-i-buy-a-email-list-of-10-000-can-i-send-to-all-of-those-people-at-one-time-off-your-site) — 10 comments, 1 upvote
  > **Top comment:** "You can't buy and e-mail list and loaded it into Constant Contact. They will only send to people who have signed up to receive your e-blasts. You can have..."
- Title: [What is constant contact software?](https://www.g2.com/discussions/what-is-constant-contact-software) — 6 comments
  > **Top comment:** "An efficient, easy-to-employ method of communicating your marketing and/or fundraising messages online."
- Title: [Does a busy small business owner have time to market their company on Constant Contact? (Nope)](https://www.g2.com/discussions/does-a-busy-small-business-owner-have-time-to-market-their-company-on-constant-contact-nope) — 5 comments, 1 upvote
  > **Top comment:** "You say no, but perhaps if you allow Constant Contact to do some of the work for you, you might have a  bit more time to spend on all those other important..."
- Title: [What is Constant Contact used for?](https://www.g2.com/discussions/constant-contact-what-is-constant-contact-used-for) — 4 comments, 1 upvote
  > **Top comment:** "I use Constant Contact to organize, create and send classy newsletters to our group's different membership levels. I'm always getting complimented on how..."
- Title: [Is constant contact taking any responsibility for poor deliveribility?](https://www.g2.com/discussions/14312-is-constant-contact-taking-any-responsibility-for-poor-deliveribility) — 4 comments, 1 upvote
  > **Top comment:** "Hello Amanda - Constant Contact prides itself on high deliverability, and we'd like to look into this further for you to see if there is a specific issue..."

### Klaviyo

- Title: [What is UTM tracking Klaviyo?](https://www.g2.com/discussions/what-is-utm-tracking-klaviyo) — 3 comments
  > **Top comment:** "You can add Google Analytics utm tracking data to your emails sent in Klayvio. This can be automated."
- Title: [how can i know the language for my clients](https://www.g2.com/discussions/13491-how-can-i-know-the-language-for-my-clients) — 3 comments, 1 upvote
  > **Top comment:** "You need to add a dynamic in your website when collecting data then use a segmentatino of your data into language preferences based on the tick..."
- Title: [What is Klaviyo used for?](https://www.g2.com/discussions/what-is-klaviyo-used-for) — 2 comments
  > **Top comment:** "It is a tool for email  marketing."
- Title: [Does Klaviyo integrate with Shopify?](https://www.g2.com/discussions/does-klaviyo-integrate-with-shopify) — 2 comments
  > **Top comment:** "Yes"
- Title: [Are their pre-built flows available?](https://www.g2.com/discussions/13499-are-their-pre-built-flows-available) — 2 comments, 1 upvote
  > **Top comment:** "You can set up any combination of new flows and even run split tests on  those in a flow. They also have video tutorials to do this."

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/activecampaign-vs-constant-contact-vs-klaviyo)