# Sailthru by Marigold, Twilio SendGrid Email API vs ActiveCampaign Postmark Comparison

| | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Star Rating** | 4.2 out of 5 | 4.0 out of 5 | 4.6 out of 5 | 
| **Total Reviews** | 155 | 368 | 31 | 
| **Largest Market Segment** | Mid-Market (59.5% of reviews) | Small-Business (68.3% of reviews) | Small-Business (64.5% of reviews) | 
| **Entry Level Price** | No pricing available | $14.95 to $29.95  per month  | Free Trial | 

---
## Top Pros & Cons

### Sailthru by Marigold

Pros:
- Automation (2 reviews)
- Automation Features (2 reviews)

Cons:
- Difficult Learning (2 reviews)
- Inadequate Reporting (2 reviews)

### Twilio SendGrid Email API

Pros:
- Ease of Use (2 reviews)
- Easy Integrations (2 reviews)

Cons:
- Difficult Setup (1 reviews)
- Limited Templates (1 reviews)

### ActiveCampaign Postmark

Pros:
- Deliverability (2 reviews)
- Easy Setup (2 reviews)

Cons:
- Expensive (1 reviews)
- Poor Customer Support (1 reviews)

---
## Ratings Comparison
| Rating | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
  | **Meets Requirements** | 8.7 (134 reviews) | 8.5 (317 reviews) | 9.4 (26 reviews) | 
  | **Ease of Use** | 8.3 (134 reviews) | 8.3 (320 reviews) | 9.1 (25 reviews) | 
  | **Ease of Setup** | 8.0 (53 reviews) | 8.2 (182 reviews) | 9.3 (15 reviews) | 
  | **Ease of Admin** | 8.5 (54 reviews) | 8.2 (175 reviews) | 9.7 (11 reviews) | 
  | **Quality of Support** | 8.5 (126 reviews) | 7.5 (253 reviews) | 9.0 (25 reviews) | 
  | **Has the product been a good partner in doing business?** | 8.7 (51 reviews) | 7.8 (164 reviews) | 9.7 (10 reviews) | 
  | **Product Direction (% positive)** | 7.6 (130 reviews) | 7.2 (302 reviews) | 8.0 (23 reviews) | 

---
## Pricing

### Sailthru by Marigold

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

### Twilio SendGrid Email API

#### Entry-Level Pricing

Plan: ESSENTIALS (40K, 100K Packages)

Price: $14.95 to $29.95  per month 

Description: Two packages to meet your mail sending needs 

Key Features:
- Easy to Use APIs and Webhooks
- Detailed Analytics and Reporting
- DKIM Customization 

[Browse all 3 editions](https://www.g2.com/products/twilio-sendgrid-email-api/pricing)

#### Free Trial

Yes

### ActiveCampaign Postmark

#### Entry-Level Pricing

Plan: Free Trial

Price: Free Trial

Description: Everyone starts on our free Developer tier, which includes 100 emails every month. And it never expires or runs out.

Key Features:
- 100 emails per month

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

#### Free Trial

Yes

---
## Features Comparison By Category

### Marketing Automation

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | 8.1/10 | 101 |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Email Marketing

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Building and Personalizing Emails** | 8.6 (95 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Sending Outbound Emails** | 9.0 (94 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Manage Email Deliverability** | 8.6 (95 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Automated Email Responses** | 8.6 (78 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Online Marketing

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Landing Pages and Forms** | 7.9 (57 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Dynamic Content** | 8.3 (72 reviews) ✓ Verified | Not enough data | Not enough data | 
| **A/B Testing** | 8.6 (82 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Mobile Optimized** | 8.7 (73 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Search Tracking and Optimization** | 8.1 (12 reviews) | Not enough data | Not enough data | 

#### Lead Management

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Marketing Lead Database** | 7.9 (22 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Data Quality Management** | 7.7 (37 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Segmentation** | 8.1 (41 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Lead Scoring and Grading** | 7.5 (25 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Lead Nurturing** | 7.8 (30 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Online Behavior Tracking** | 7.7 (35 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Automated Alerts and Tasks** | 8.1 (25 reviews) ✓ Verified | Not enough data | Not enough data | 
| **CRM Lead Integration** | 7.5 (27 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Campaign Management

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Program Management** | 8.5 (66 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Event / Webinar Marketing** | 7.9 (12 reviews) | Not enough data | Not enough data | 
| **Calendaring** | 9.2 (10 reviews) | Not enough data | Not enough data | 
| **Budgeting** | 8.3 (9 reviews) | Not enough data | Not enough data | 

#### Social

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Social Listening** | 8.5 (10 reviews) | Not enough data | Not enough data | 
| **Social Sharing** | 8.2 (46 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Social Campaigns** | 7.0 (11 reviews) | Not enough data | Not enough data | 
| **Social Media Engagement** | 8.2 (10 reviews) | Not enough data | Not enough data | 
| **Social Media Advertising** | 7.5 (12 reviews) | Not enough data | Not enough data | 

#### Reporting & Analytics

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Basic Reporting** | 7.9 (95 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Web Analytics** | 7.8 (74 reviews) ✓ Verified | Not enough data | Not enough data | 
| **ROI Analytics** | 8.0 (57 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Revenue Analytics** | 7.7 (62 reviews) ✓ Verified | Not enough data | Not enough data | 
| **SEO / Keyword Analytics** | 7.7 (13 reviews) | Not enough data | Not enough data | 

#### Platform

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Customization ** | 7.9 (33 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Workflow Capability** | 7.8 (29 reviews) ✓ Verified | Not enough data | Not enough data | 
| **User, Role, and Access Management** | 8.8 (32 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Internationalization** | Not enough data | Not enough data | Not enough data | 
| **Sandbox / Test Environments** | 7.3 (5 reviews) | Not enough data | Not enough data | 
| **Performance and Reliability** | 8.6 (32 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Output Document Generation** | 8.2 (22 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Agentic AI - Marketing Automation

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **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 | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

#### Integration

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Data Import & Export Tools** | 8.4 (30 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Integration APIs** | 8.6 (30 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Breadth of Partner Applications** | 7.5 (24 reviews) ✓ Verified | Not enough data | Not enough data | 

### Transactional Email

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | 8.5/10 | 150 |
| **ActiveCampaign Postmark** | 9.0/10 | 22 |

#### Administration

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Template Creation** | Not enough data | 7.9 (85 reviews) | 8.2 (12 reviews) | 
| **Preset Template Availability** | Not enough data | 7.5 (77 reviews) | 7.6 (12 reviews) | 
| **Custom Unsubscribe** | Not enough data | 8.1 (84 reviews) | Feature Not Available | 
| **Email Segmentation** | Not enough data | 8.1 (89 reviews) | Feature Not Available | 
| **Detailed Server Logs** | Not enough data | 7.9 (97 reviews) | 9.0 (18 reviews) | 
| **Notifications** | Not enough data | 8.3 (100 reviews) | 9.4 (14 reviews) | 

#### Integrations

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Webhooks** | Not enough data | 8.9 (91 reviews) | 9.5 (14 reviews) | 
| **Event Tracking API** | Not enough data | 8.8 (84 reviews) | 9.4 (12 reviews) | 
| **Mail Send API** | Not enough data | 9.3 (122 reviews) | 9.8 (17 reviews) | 
| **Spam Filter Testing** | Not enough data | 8.3 (72 reviews) | 8.8 (10 reviews) | 

#### Platform

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Custom Tracking Domain** | Not enough data | 9.2 (86 reviews) | Feature Not Available | 
| **Multiple Domains** | Not enough data | 8.8 (71 reviews) | 8.8 (13 reviews) | 
| **Dedicated IP** | Not enough data | 8.6 (74 reviews) | 8.5 (10 reviews) | 
| **Documentation** | Not enough data | 8.4 (118 reviews) | 9.2 (17 reviews) | 
| **Sender Reputation Management** | Not enough data | 8.3 (109 reviews) | 8.6 (11 reviews) | 
| **Tracking & Reporting** | Not enough data | 8.3 (121 reviews) | 9.1 (18 reviews) | 
| **Enterprise Scalability** | Not enough data | 8.6 (87 reviews) | 8.3 (10 reviews) | 
| **Performance and Reliability** | Not enough data | 8.7 (126 reviews) | 9.3 (19 reviews) | 

### Email Deliverability

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | 8.4/10 | 145 |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Diagnosis

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **IP Address ** | Not enough data | 8.3 (97 reviews) | Not enough data | 
| **Domains** | Not enough data | 8.8 (105 reviews) | Not enough data | 
| **Content ** | Not enough data | 8.5 (99 reviews) | Not enough data | 
| **Policy Compliance** | Not enough data | 8.7 (98 reviews) | Not enough data | 

#### Tracking

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Processing Time** | Not enough data | 8.9 (116 reviews) | Not enough data | 
| **Placement ** | Not enough data | 8.3 (102 reviews) | Not enough data | 
| **Open Rate** | Not enough data | 8.6 (117 reviews) | Not enough data | 
| **Time to Open** | Not enough data | 8.5 (108 reviews) | Not enough data | 
| **Alerts** | Not enough data | 8.4 (103 reviews) | Not enough data | 

#### Reporting

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Campaign Performance** | Not enough data | 8.3 (98 reviews) | Not enough data | 
| **Domain Reputation** | Not enough data | 8.1 (110 reviews) | Not enough data | 
| **Brand Reputation** | Not enough data | 8.3 (95 reviews) | Not enough data | 
| **Blacklist and Whitelist** | Not enough data | 8.0 (109 reviews) | Not enough data | 

#### Agentic AI - Email Deliverability

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | 8.1 (7 reviews) | Not enough data | 
| **Cross-system Integration** | Not enough data | 8.9 (6 reviews) | Not enough data | 
| **Adaptive Learning** | 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 | 

### Push Notification

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Campaigns

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Customize** | Not enough data | Not enough data | Not enough data | 
| **Scheduling** | Not enough data | Not enough data | Not enough data | 
| **Retarget** | Not enough data | Not enough data | Not enough data | 
| **Segmentation** | Not enough data | Not enough data | Not enough data | 
| **Triggered Notifications** | Not enough data | Not enough data | Not enough data | 

#### Analytics

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Campaign Performance** | Not enough data | Not enough data | Not enough data | 
| **Audience Insights** | Not enough data | Not enough data | Not enough data | 

#### Optimization

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **A/B Testing** | Not enough data | Not enough data | Not enough data | 
| **Personalization** | Not enough data | Not enough data | Not enough data | 
| **Rich Notifications** | Not enough data | Not enough data | Not enough data | 
| **Integrations** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Push Notification

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Adaptive Learning** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 

### Personalization Engines

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Segmentation

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **A/B Testing** | 9.0 (8 reviews) | Not enough data | Not enough data | 
| **Customer Profiles** | 9.2 (6 reviews) | Not enough data | Not enough data | 

#### Targeting

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Behavioral Targeting** | 8.9 (6 reviews) | Not enough data | Not enough data | 
| **Contextual Targeting** | 9.0 (5 reviews) | Not enough data | Not enough data | 

#### Triggered Content

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Geofencing** | 10.0 (5 reviews) | Not enough data | Not enough data | 
| **Triggered Emails** | 9.6 (9 reviews) | Not enough data | Not enough data | 
| **Triggered Messages** | 9.5 (7 reviews) | Not enough data | Not enough data | 

#### Personalized Content

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Recommendation Engine** | 8.3 (7 reviews) | Not enough data | Not enough data | 
| **Personalized Discounts** | Not enough data | Not enough data | Not enough data | 
| **Website Personalization** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Personalization Engines

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | 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 | 

### Email Template Builder

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Templates

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Text and Themes** | Not enough data | Not enough data | Not enough data | 
| **Stock Images** | Not enough data | Not enough data | Not enough data | 
| **Proofing** | Not enough data | Not enough data | Not enough data | 
| **Mobile Responsive** | Not enough data | Not enough data | Not enough data | 

#### Edit

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Pre-Made** | Not enough data | Not enough data | Not enough data | 
| **Build** | Not enough data | Not enough data | Not enough data | 
| **HTML** | Not enough data | Not enough data | Not enough data | 

#### Logistics

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Analytics** | Not enough data | Not enough data | Not enough data | 
| **Issues** | Not enough data | Not enough data | Not enough data | 
| **Integrations** | Not enough data | Not enough data | Not enough data | 
| **Shareable Link** | Not enough data | Not enough data | Not enough data | 

#### Generative AI

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 
| **AI Text Summarization** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Email Template Builder

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

### SMS Marketing

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Text Messaging

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Bulk SMS** | Not enough data | Not enough data | Not enough data | 
| **Two-Way Text Messaging** | Not enough data | Not enough data | Not enough data | 
| **Text Scheduler** | Not enough data | Not enough data | Not enough data | 
| **Automatic Replies** | Not enough data | Not enough data | Not enough data | 
| **Automatic URL Shortening** | Not enough data | Not enough data | Not enough data | 
| **MMS Marketing** | Not enough data | Not enough data | Not enough data | 
| **Personalization** | Not enough data | Not enough data | Not enough data | 
| **Transactional SMS** | Not enough data | Not enough data | Not enough data | 

#### SMS Platform

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Reporting** | Not enough data | Not enough data | Not enough data | 
| **Automation** | Not enough data | Not enough data | Not enough data | 
| **White Label** | Not enough data | Not enough data | Not enough data | 
| **Text-to-Landline** | Not enough data | Not enough data | Not enough data | 
| **Short Codes** | Not enough data | Not enough data | Not enough data | 
| **API Integration** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - SMS Marketing

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **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 | 
| **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 | 

### Email Testing

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Platform Basics

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Editing Platform** | Not enough data | Not enough data | Not enough data | 
| **Spam Filter Testing** | Not enough data | Not enough data | Not enough data | 
| **A/B Testing** | Not enough data | Not enough data | Not enough data | 
| **Deliverability Testing** | Not enough data | Not enough data | Not enough data | 
| **Design Testing** | Not enough data | Not enough data | Not enough data | 

#### Platform Data

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Performance** | Not enough data | Not enough data | Not enough data | 
| **Dashboard** | Not enough data | Not enough data | Not enough data | 
| **Analytics** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Email Testing

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | 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 | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 
| **Decision Making** | Not enough data | Not enough data | Not enough data | 

### Customer Journey Mapping

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Platform Basics

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Templates** | Not enough data | Not enough data | Not enough data | 
| **Exporting** | Not enough data | Not enough data | Not enough data | 
| **Multi-user Access and Collaboration** | Not enough data | Not enough data | Not enough data | 
| **Multiple Personas** | Not enough data | Not enough data | Not enough data | 
| **Data Analytics ** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Customer Journey Mapping

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 

### Pop-Up Builder

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Design and Customization

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Pre-Designed Templates** | Not enough data | Not enough data | Not enough data | 
| **Pop-Up Types** | Not enough data | Not enough data | Not enough data | 
| **No-Code Customization** | Not enough data | Not enough data | Not enough data | 
| **Mobile Optimized** | Not enough data | Not enough data | Not enough data | 

#### Campaigns

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Targeting** | Not enough data | Not enough data | Not enough data | 
| **Triggered Campaigns** | Not enough data | Not enough data | Not enough data | 
| **A/B Testing** | Not enough data | Not enough data | Not enough data | 
| **Analytics** | Not enough data | Not enough data | Not enough data | 

#### Integrations

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **CRM/Email Integrations** | Not enough data | Not enough data | Not enough data | 
| **WCM Integrations** | Not enough data | Not enough data | Not enough data | 
| **E-Commerce Integrations** | Not enough data | Not enough data | Not enough data | 
| **Social Media Integrations** | Not enough data | Not enough data | Not enough data | 

#### Generative AI

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Vulnerability Scanner

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | Not enough data | 
| **Proactive Assistance** | Not enough data | Not enough data | Not enough data | 

### Landing Page Builders

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Page Customization

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Drag and Drop** | Not enough data | Not enough data | Not enough data | 
| **Templates** | Not enough data | Not enough data | Not enough data | 
| **Advanced Customization** | Not enough data | Not enough data | Not enough data | 
| **Content Library** | Not enough data | Not enough data | Not enough data | 

#### Page Optimization

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **A/B Testing** | Not enough data | Not enough data | Not enough data | 
| **Mobile Responsive** | Not enough data | Not enough data | Not enough data | 
| **Web Analytics** | Not enough data | Not enough data | Not enough data | 
| **SEO** | Not enough data | Not enough data | Not enough data | 

#### Integrations

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **E-Commerce Integration** | Not enough data | Not enough data | Not enough data | 
| **Email Marketing Integration** | Not enough data | Not enough data | Not enough data | 
| **Domain Integration** | Not enough data | Not enough data | Not enough data | 

#### Generative AI

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | Not enough data | 

#### Agentic AI - Landing Page Builders

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Cross-system Integration** | Not enough data | Not enough data | Not enough data | 

### Personalization

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | N/A | N/A |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Agentic AI - Personalization

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Autonomous Task Execution** | 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 | 

### Mobile Marketing

| Product | Score | Reviews |
|---|---|---|
| **Sailthru by Marigold** | 8.6/10 | 18 |
| **Twilio SendGrid Email API** | N/A | N/A |
| **ActiveCampaign Postmark** | N/A | N/A |

#### Analysis

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Application Attribution** | 8.3 (9 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Campaign Analysis** | 8.6 (13 reviews) | Not enough data | Not enough data | 
| **Uninstall Tracking** | 8.3 (6 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Custom Dashboards** | 9.0 (7 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Campaigns

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Proximity Marketing** | 8.1 (9 reviews) | Not enough data | Not enough data | 
| **Push Notifications** | 8.5 (9 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Bulk SMS** | 8.9 (6 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Two-Way Text Messaging** | 9.0 (5 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Email Campaigns** | 9.2 (12 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Audience Segmentation** | 8.3 (10 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Engagement

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Coupons and Promotions** | 8.5 (11 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Platform

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Optimization** | 8.3 (13 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Integrations - Mobile Marketing** | 7.9 (12 reviews) ✓ Verified | Not enough data | Not enough data | 
| **Internationalization** | 9.2 (12 reviews) ✓ Verified | Not enough data | Not enough data | 

#### Agentic AI - Mobile Marketing

| Feature | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **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 | 
| **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 (1):** [Transactional Email Software](https://www.g2.com/categories/transactional-email)

**Unique to Sailthru by Marigold (12):** [Customer Journey Mapping Tools](https://www.g2.com/categories/customer-journey-mapping), [Email Testing Software](https://www.g2.com/categories/email-testing), [SMS Marketing Software](https://www.g2.com/categories/sms-marketing), [Email Template Builder Software](https://www.g2.com/categories/email-template-builder), [Personalization Software](https://www.g2.com/categories/personalization), [Personalization Engines](https://www.g2.com/categories/personalization-engines), [Push Notification Software](https://www.g2.com/categories/push-notification), [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability), [Mobile Marketing Software](https://www.g2.com/categories/mobile-marketing), [Marketing Automation Software](https://www.g2.com/categories/marketing-automation), [Landing Page Builders](https://www.g2.com/categories/landing-page-builders), [Pop-Up Builder Software](https://www.g2.com/categories/pop-up-builder)

**Unique to Twilio SendGrid Email API (1):** [Email Deliverability Tools](https://www.g2.com/categories/email-deliverability)



---
## Reviewer Demographics

### By Company Size

| Segment | Sailthru by Marigold | Twilio SendGrid Email API | ActiveCampaign Postmark | 
|---|---|---|---|
| **Small-Business** | 20.9% | 68.3% | 64.5% | 
| **Mid-Market** | 59.5% | 25.3% | 35.5% | 
| **Enterprise** | 19.6% | 6.5% | 0% | 

### By Industry

#### Sailthru by Marigold

- **Retail:** 12.5%
- **Publishing:** 12.5%
- **Marketing and Advertising:** 8.6%
- **Media Production:** 7.9%
- **Apparel & Fashion:** 7.2%
- **Consumer Goods:** 6.6%
- **Internet:** 6.6%
- **Online Media:** 6.6%
- **Newspapers:** 4.6%
- **Entertainment:** 4.6%
- **Other:** 22.4%

#### Twilio SendGrid Email API

- **Computer Software:** 17.7%
- **Information Technology and Services:** 13.5%
- **Marketing and Advertising:** 8.4%
- **Internet:** 7.0%
- **Financial Services:** 5.9%
- **Education Management:** 3.1%
- **Non-Profit Organization Management:** 2.5%
- **Retail:** 2.5%
- **Health, Wellness and Fitness:** 2.2%
- **Construction:** 2.2%
- **Other:** 34.8%

#### ActiveCampaign Postmark

- **Computer Software:** 35.5%
- **Marketing and Advertising:** 9.7%
- **Information Technology and Services:** 9.7%
- **Internet:** 6.5%
- **Financial Services:** 6.5%
- **Transportation/Trucking/Railroad:** 3.2%
- **Retail:** 3.2%
- **Restaurants:** 3.2%
- **Printing:** 3.2%
- **Online Media:** 3.2%
- **Other:** 16.1%

---
## Alternatives

### Alternatives to Sailthru by Marigold

- [Agentforce Marketing (formerly Salesforce Marketing Cloud)](https://www.g2.com/products/agentforce-marketing-formerly-salesforce-marketing-cloud/reviews) — 4.0/5 stars (4462 reviews)
- [Campaign Monitor](https://www.g2.com/products/campaign-monitor/reviews) — 4.1/5 stars (722 reviews)
- [Dotdigital](https://www.g2.com/products/dotdigital/reviews) — 4.4/5 stars (1203 reviews)
- [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.6/5 stars (1352 reviews)
- [Iterable](https://www.g2.com/products/iterable/reviews) — 4.4/5 stars (824 reviews)
- [Braze](https://www.g2.com/products/braze/reviews) — 4.5/5 stars (1680 reviews)
- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12963 reviews)
- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [GetResponse](https://www.g2.com/products/getresponse/reviews) — 4.3/5 stars (1120 reviews)
- [Emma](https://www.g2.com/products/emma/reviews) — 4.0/5 stars (555 reviews)

### Alternatives to Twilio SendGrid Email API

- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12963 reviews)
- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [Netcore Email API](https://www.g2.com/products/netcore-email-api/reviews) — 4.4/5 stars (732 reviews)
- [Mailgun](https://www.g2.com/products/mailgun/reviews) — 4.2/5 stars (321 reviews)
- [SparkPost](https://www.g2.com/products/sparkpost/reviews) — 4.0/5 stars (73 reviews)
- [SendPulse](https://www.g2.com/products/sendpulse/reviews) — 4.6/5 stars (712 reviews)
- [SocketLabs](https://www.g2.com/products/socketlabs/reviews) — 4.5/5 stars (41 reviews)
- [SMTP2GO](https://www.g2.com/products/smtp2go/reviews) — 4.7/5 stars (226 reviews)
- [Elastic Email](https://www.g2.com/products/elastic-email/reviews) — 4.4/5 stars (212 reviews)
- [Amazon Simple Email Service (Amazon SES)](https://www.g2.com/products/amazon-simple-email-service-amazon-ses/reviews) — 4.3/5 stars (202 reviews)

### Alternatives to ActiveCampaign Postmark

- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2566 reviews)
- [Mailgun](https://www.g2.com/products/mailgun/reviews) — 4.2/5 stars (321 reviews)
- [Amazon Simple Email Service (Amazon SES)](https://www.g2.com/products/amazon-simple-email-service-amazon-ses/reviews) — 4.3/5 stars (202 reviews)
- [SMTP2GO](https://www.g2.com/products/smtp2go/reviews) — 4.7/5 stars (226 reviews)
- [Mailjet](https://www.g2.com/products/mailjet/reviews) — 4.0/5 stars (174 reviews)
- [Netcore Email API](https://www.g2.com/products/netcore-email-api/reviews) — 4.4/5 stars (732 reviews)
- [Elastic Email](https://www.g2.com/products/elastic-email/reviews) — 4.4/5 stars (212 reviews)
- [Intuit Mailchimp Email Marketing](https://www.g2.com/products/intuit-mailchimp-email-marketing/reviews) — 4.3/5 stars (12963 reviews)
- [SparkPost](https://www.g2.com/products/sparkpost/reviews) — 4.0/5 stars (73 reviews)
- [SendPulse](https://www.g2.com/products/sendpulse/reviews) — 4.6/5 stars (712 reviews)

---
## Top Discussions

### Sailthru by Marigold

No discussions available for this product.

### Twilio SendGrid Email API

- Title: [What is my API Key?](https://www.g2.com/discussions/api-key-5793c785-2bfd-4896-a233-92f65c2f8462) — 1 comment, 1 upvote *(includes official response)*
  > **Top comment:** "Your API key is the same string as the password that you use to log onto sendgrid.com. Don't forget that you can also create auxiliary sets of API..."
- Title: [Can I send from more than one domain through SendGrid?](https://www.g2.com/discussions/sending-from-multiple-domains) — 1 comment, 1 upvote *(includes official response)*
  > **Top comment:** "Depending on your account level, this can be accomplished. If you are sending through a shared IP plan then no additional changes are required and you can..."

### ActiveCampaign Postmark

No discussions available for this product.

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/sailthru-by-marigold-vs-twilio-sendgrid-email-api-vs-activecampaign-postmark)