# Knock, OneSignal vs Iterable Comparison

| | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Star Rating** | 4.6 out of 5 | 4.7 out of 5 | 4.4 out of 5 | 
| **Total Reviews** | 146 | 1,198 | 826 | 
| **Largest Market Segment** | Small-Business (76.3% of reviews) | Small-Business (64.9% of reviews) | Mid-Market (55.7% of reviews) | 
| **Entry Level Price** | Free | Free | No pricing available | 

---
## Top Pros & Cons

### Knock

Pros:
- Ease of Use (39 reviews)
- Notifications (34 reviews)

Cons:
- Missing Features (19 reviews)
- Insufficient Features (8 reviews)

### OneSignal

Pros:
- Ease of Use (143 reviews)
- Notifications (114 reviews)

Cons:
- Missing Features (33 reviews)
- Learning Curve (30 reviews)

### Iterable

Pros:
- Ease of Use (185 reviews)
- Customer Support (120 reviews)

Cons:
- Missing Features (92 reviews)
- Learning Curve (79 reviews)

---
## Ratings Comparison
| Rating | Knock | OneSignal | Iterable | 
|---|---|---|---|
  | **Meets Requirements** | 9.0 (130 reviews) | 9.0 (647 reviews) | 8.5 (645 reviews) | 
  | **Ease of Use** | 8.7 (135 reviews) | 9.3 (1019 reviews) | 8.4 (658 reviews) | 
  | **Ease of Setup** | 8.7 (98 reviews) | 8.9 (552 reviews) | 7.8 (344 reviews) | 
  | **Ease of Admin** | 9.0 (59 reviews) | 9.0 (377 reviews) | 8.4 (232 reviews) | 
  | **Quality of Support** | 9.7 (108 reviews) | 9.0 (598 reviews) | 8.8 (630 reviews) | 
  | **Has the product been a good partner in doing business?** | 9.5 (55 reviews) | 9.1 (353 reviews) | 9.0 (234 reviews) | 
  | **Product Direction (% positive)** | 9.6 (134 reviews) | 9.0 (627 reviews) | 9.1 (635 reviews) | 

---
## Pricing

### Knock

#### Entry-Level Pricing

Plan: Developer

Price: Free

Description: For testing and evaluation, or small-scale deployments.


Key Features:
- Includes 10k notifications a month
- Unlimited channels
- Unlimited notification workflows

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

#### Free Trial

Yes

### OneSignal

#### Entry-Level Pricing

Plan: Free

Price: Free

Description: Start with OneSignal's Free Plan which offers powerful messaging with an easy setup.

Key Features:
- 10,000 free monthly email sends
- Unlimited mobile push sends
- In-App messaging

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

#### Free Trial

Yes

### Iterable

#### Entry-Level Pricing

No pricing available

#### Free Trial

No information available

---
## Features Comparison By Category

### Marketing Automation

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | 8.5/10 | 148 |
| **Iterable** | 7.4/10 | 534 |

#### Email Marketing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Building and Personalizing Emails** | Not enough data | 8.6 (98 reviews) | 9.0 (485 reviews) ✓ Verified | 
| **Sending Outbound Emails** | Not enough data | 8.9 (96 reviews) | 9.0 (472 reviews) ✓ Verified | 
| **Manage Email Deliverability** | Not enough data | 8.8 (95 reviews) | 8.2 (454 reviews) ✓ Verified | 
| **Automated Email Responses** | Not enough data | 8.5 (90 reviews) | 8.4 (401 reviews) ✓ Verified | 

#### Online Marketing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Landing Pages and Forms** | Not enough data | Feature Not Available | 6.2 (267 reviews) ✓ Verified | 
| **Dynamic Content** | Not enough data | 8.7 (95 reviews) | 8.3 (407 reviews) ✓ Verified | 
| **A/B Testing** | Not enough data | 8.6 (98 reviews) | 8.4 (450 reviews) ✓ Verified | 
| **Mobile Optimized** | Not enough data | 9.1 (95 reviews) | 8.1 (403 reviews) ✓ Verified | 
| **Search Tracking and Optimization** | Not enough data | Feature Not Available | 6.9 (272 reviews) ✓ Verified | 

#### Lead Management

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Marketing Lead Database** | Not enough data | Feature Not Available | 7.3 (305 reviews) ✓ Verified | 
| **Data Quality Management** | Not enough data | 8.5 (90 reviews) | 7.4 (336 reviews) ✓ Verified | 
| **Segmentation** | Not enough data | 9.2 (96 reviews) | 8.6 (442 reviews) ✓ Verified | 
| **Lead Scoring and Grading** | Not enough data | Feature Not Available | 6.8 (273 reviews) ✓ Verified | 
| **Lead Nurturing** | Not enough data | 8.7 (91 reviews) | 7.7 (299 reviews) ✓ Verified | 
| **Online Behavior Tracking** | Not enough data | 8.5 (92 reviews) | 7.1 (290 reviews) ✓ Verified | 
| **Automated Alerts and Tasks** | Not enough data | 8.7 (95 reviews) | 7.3 (278 reviews) ✓ Verified | 
| **CRM Lead Integration** | Not enough data | 8.4 (85 reviews) | 7.4 (279 reviews) ✓ Verified | 

#### Campaign Management

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Program Management** | Not enough data | Feature Not Available | 7.7 (297 reviews) | 
| **Event / Webinar Marketing** | Not enough data | Feature Not Available | 6.9 (268 reviews) ✓ Verified | 
| **Calendaring** | Not enough data | Feature Not Available | 6.6 (243 reviews) | 
| **Budgeting** | Not enough data | Feature Not Available | 6.0 (224 reviews) | 

#### Social

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Social Listening** | Not enough data | Feature Not Available | Feature Not Available | 
| **Social Sharing** | Not enough data | 8.3 (88 reviews) | 6.1 (212 reviews) | 
| **Social Campaigns** | Not enough data | Feature Not Available | 5.8 (212 reviews) | 
| **Social Media Engagement** | Not enough data | Feature Not Available | 5.7 (212 reviews) | 
| **Social Media Advertising** | Not enough data | Feature Not Available | 5.9 (223 reviews) | 

#### Reporting & Analytics

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Basic Reporting** | Not enough data | 8.6 (101 reviews) | 7.6 (444 reviews) ✓ Verified | 
| **Web Analytics** | Not enough data | 8.5 (88 reviews) | 6.5 (288 reviews) ✓ Verified | 
| **ROI Analytics** | Not enough data | 8.1 (87 reviews) | 6.6 (277 reviews) ✓ Verified | 
| **Revenue Analytics** | Not enough data | 8.1 (85 reviews) | 6.6 (276 reviews) ✓ Verified | 
| **SEO / Keyword Analytics** | Not enough data | Feature Not Available | 5.8 (227 reviews) ✓ Verified | 

#### Platform

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Customization ** | Not enough data | 8.6 (97 reviews) | 8.1 (340 reviews) ✓ Verified | 
| **Workflow Capability** | Not enough data | 8.5 (91 reviews) | 8.5 (343 reviews) ✓ Verified | 
| **User, Role, and Access Management** | Not enough data | 8.3 (100 reviews) | 8.5 (338 reviews) ✓ Verified | 
| **Internationalization** | Not enough data | 8.2 (61 reviews) | 7.5 (225 reviews) | 
| **Sandbox / Test Environments** | Not enough data | 8.2 (63 reviews) | 8.0 (311 reviews) ✓ Verified | 
| **Performance and Reliability** | Not enough data | 8.9 (100 reviews) | 8.3 (342 reviews) ✓ Verified | 
| **Output Document Generation** | Not enough data | 8.0 (85 reviews) | 7.1 (242 reviews) ✓ Verified | 

#### Agentic AI - Marketing Automation

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 6.9 (24 reviews) | 
| **Multi-step Planning** | Not enough data | Not enough data | 7.0 (23 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.4 (26 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 7.5 (24 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 7.4 (26 reviews) | 
| **Decision Making** | Not enough data | Not enough data | 7.5 (25 reviews) | 

#### Integration

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Data Import & Export Tools** | Not enough data | 8.2 (91 reviews) | 7.8 (344 reviews) ✓ Verified | 
| **Integration APIs** | Not enough data | 8.6 (99 reviews) | 8.1 (341 reviews) ✓ Verified | 
| **Breadth of Partner Applications** | Not enough data | 8.1 (89 reviews) | 7.6 (283 reviews) ✓ Verified | 

### Transactional Email

| Product | Score | Reviews |
|---|---|---|
| **Knock** | 8.3/10 | 80 |
| **OneSignal** | N/A | N/A |
| **Iterable** | N/A | N/A |

#### Administration

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Template Creation** | 8.2 (79 reviews) | Not enough data | Not enough data | 
| **Preset Template Availability** | 7.0 (67 reviews) | Not enough data | Not enough data | 
| **Custom Unsubscribe** | 7.5 (53 reviews) | Not enough data | Not enough data | 
| **Email Segmentation** | 8.2 (54 reviews) | Not enough data | Not enough data | 
| **Detailed Server Logs** | 8.4 (74 reviews) | Not enough data | Not enough data | 
| **Notifications** | 9.2 (76 reviews) | Not enough data | Not enough data | 

#### Integrations

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Webhooks** | 8.8 (64 reviews) | Not enough data | Not enough data | 
| **Event Tracking API** | 8.3 (59 reviews) | Not enough data | Not enough data | 
| **Mail Send API** | 9.0 (68 reviews) | Not enough data | Not enough data | 
| **Spam Filter Testing** | 7.5 (43 reviews) | Not enough data | Not enough data | 

#### Platform

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Custom Tracking Domain** | 8.4 (44 reviews) | Not enough data | Not enough data | 
| **Multiple Domains** | 8.1 (43 reviews) | Not enough data | Not enough data | 
| **Dedicated IP** | 7.6 (41 reviews) | Not enough data | Not enough data | 
| **Documentation** | 8.8 (74 reviews) | Not enough data | Not enough data | 
| **Sender Reputation Management** | 7.8 (41 reviews) | Not enough data | Not enough data | 
| **Tracking & Reporting** | 8.4 (60 reviews) | Not enough data | Not enough data | 
| **Enterprise Scalability** | 8.6 (54 reviews) | Not enough data | Not enough data | 
| **Performance and Reliability** | 9.4 (72 reviews) | Not enough data | Not enough data | 

### Push Notification

| Product | Score | Reviews |
|---|---|---|
| **Knock** | 7.9/10 | 62 |
| **OneSignal** | 8.3/10 | 557 |
| **Iterable** | 8.0/10 | 186 |

#### Campaigns

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Customize** | 8.7 (58 reviews) | 8.9 (465 reviews) | 8.3 (158 reviews) | 
| **Scheduling** | 9.1 (53 reviews) | 9.1 (456 reviews) | 8.7 (160 reviews) | 
| **Retarget** | 7.7 (35 reviews) | 8.6 (411 reviews) | 8.1 (144 reviews) | 
| **Segmentation** | 7.4 (37 reviews) | 8.8 (461 reviews) | 8.7 (168 reviews) | 
| **Triggered Notifications** | 9.0 (59 reviews) | 8.8 (449 reviews) | 8.5 (166 reviews) | 

#### Analytics

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Campaign Performance** | 7.1 (33 reviews) | 8.5 (445 reviews) | 7.8 (170 reviews) | 
| **Audience Insights** | 6.9 (37 reviews) | 8.4 (439 reviews) | 7.5 (160 reviews) | 

#### Optimization

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **A/B Testing** | 6.9 (32 reviews) | 8.4 (386 reviews) | 8.3 (165 reviews) | 
| **Personalization** | 8.7 (53 reviews) | 8.6 (425 reviews) | 8.5 (166 reviews) | 
| **Rich Notifications** | 8.8 (46 reviews) | 8.8 (432 reviews) | 7.7 (133 reviews) | 
| **Integrations** | 8.7 (52 reviews) | 8.7 (424 reviews) | 7.8 (148 reviews) | 

#### Agentic AI - Push Notification

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Autonomous Task Execution** | 7.2 (6 reviews) | 6.8 (13 reviews) | 7.4 (11 reviews) | 
| **Adaptive Learning** | 6.9 (6 reviews) | 7.1 (13 reviews) | 8.0 (11 reviews) | 
| **Proactive Assistance** | 7.5 (6 reviews) | 6.8 (13 reviews) | 6.8 (12 reviews) | 

### Personalization Engines

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | 8.0/10 | 49 |

#### Segmentation

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **A/B Testing** | Not enough data | Not enough data | 8.8 (43 reviews) | 
| **Customer Profiles** | Not enough data | Not enough data | 8.5 (42 reviews) | 

#### Targeting

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Behavioral Targeting** | Not enough data | Not enough data | 8.1 (44 reviews) | 
| **Contextual Targeting** | Not enough data | Not enough data | 8.1 (38 reviews) | 

#### Triggered Content

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Geofencing** | Not enough data | Not enough data | 6.9 (32 reviews) | 
| **Triggered Emails** | Not enough data | Not enough data | 9.1 (43 reviews) | 
| **Triggered Messages** | Not enough data | Not enough data | 9.2 (41 reviews) | 

#### Personalized Content

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Recommendation Engine** | Not enough data | Not enough data | 7.7 (35 reviews) | 
| **Personalized Discounts** | Not enough data | Not enough data | 7.3 (31 reviews) | 
| **Website Personalization** | Not enough data | Not enough data | 6.3 (28 reviews) | 

#### Agentic AI - Personalization Engines

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **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 |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | 8.0/10 | 17 |

#### Templates

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Text and Themes** | Not enough data | Not enough data | 8.8 (16 reviews) | 
| **Stock Images** | Not enough data | Not enough data | 5.6 (14 reviews) | 
| **Proofing** | Not enough data | Not enough data | 8.1 (15 reviews) | 
| **Mobile Responsive** | Not enough data | Not enough data | 8.7 (15 reviews) | 

#### Edit

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Pre-Made** | Not enough data | Not enough data | 7.3 (15 reviews) | 
| **Build** | Not enough data | Not enough data | 8.8 (17 reviews) | 
| **HTML** | Not enough data | Not enough data | 8.8 (16 reviews) | 

#### Logistics

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Analytics** | Not enough data | Not enough data | 8.6 (16 reviews) | 
| **Issues** | Not enough data | Not enough data | 7.8 (13 reviews) | 
| **Integrations** | Not enough data | Not enough data | 8.5 (13 reviews) | 
| **Shareable Link** | Not enough data | Not enough data | 7.6 (14 reviews) | 

#### Generative AI

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **AI Text Generation** | Not enough data | Not enough data | 8.1 (12 reviews) | 
| **AI Text Summarization** | Not enough data | Not enough data | 7.5 (12 reviews) | 

#### Agentic AI - Email Template Builder

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 8.0 (10 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.7 (10 reviews) | 

### SMS Marketing

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | 8.8/10 | 46 |
| **Iterable** | 7.6/10 | 34 |

#### Text Messaging

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Bulk SMS** | Not enough data | 9.1 (35 reviews) | 8.4 (31 reviews) | 
| **Two-Way Text Messaging** | Not enough data | Feature Not Available | 6.9 (27 reviews) | 
| **Text Scheduler** | Not enough data | 9.1 (35 reviews) | 8.7 (29 reviews) | 
| **Automatic Replies** | Not enough data | Feature Not Available | 6.9 (26 reviews) | 
| **Automatic URL Shortening** | Not enough data | 8.2 (33 reviews) | 8.3 (26 reviews) | 
| **MMS Marketing** | Not enough data | 8.5 (34 reviews) | 6.7 (25 reviews) | 
| **Personalization** | Not enough data | 8.9 (36 reviews) | 8.5 (27 reviews) | 
| **Transactional SMS** | Not enough data | 9.1 (32 reviews) | 8.5 (26 reviews) | 

#### SMS Platform

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Reporting** | Not enough data | 8.9 (34 reviews) | 7.9 (29 reviews) | 
| **Automation** | Not enough data | 8.8 (34 reviews) | 8.2 (29 reviews) | 
| **White Label** | Not enough data | Feature Not Available | 7.4 (22 reviews) | 
| **Text-to-Landline** | Not enough data | Feature Not Available | 6.2 (21 reviews) | 
| **Short Codes** | Not enough data | 8.5 (31 reviews) | 7.2 (24 reviews) | 
| **API Integration** | Not enough data | 9.1 (35 reviews) | 8.6 (25 reviews) | 

#### Agentic AI - SMS Marketing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 7.6 (7 reviews) | 
| **Multi-step Planning** | Not enough data | Not enough data | 7.4 (7 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.4 (7 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | 7.4 (7 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 7.1 (7 reviews) | 
| **Decision Making** | Not enough data | Not enough data | 7.6 (7 reviews) | 

### Customer Data Platform (CDP)

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | 8.7/10 | 10 |

#### Data Sourcing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Data Enrichment** | Not enough data | Not enough data | 8.1 (9 reviews) | 
| **Expandability** | Not enough data | Not enough data | 8.3 (10 reviews) | 
| **Content Marketing** | Not enough data | Not enough data | 8.3 (8 reviews) | 
| **Multiple Devices** | Not enough data | Not enough data | 8.5 (9 reviews) | 

#### Intelligence

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Marketing Metrics** | Not enough data | Not enough data | 8.8 (8 reviews) | 
| **Predictive Modeling** | Not enough data | Not enough data | 8.1 (8 reviews) | 
| **Recommendation Engine** | Not enough data | Not enough data | 7.9 (8 reviews) | 

### Customer Journey Analytics

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | 7.5/10 | 40 |

#### Platform Basics

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Dynamic Segmentation** | Not enough data | Not enough data | 8.1 (38 reviews) | 
| **Journey Optimization** | Not enough data | Not enough data | 8.2 (38 reviews) | 

#### Platform Data

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Journey Reporting** | Not enough data | Not enough data | 7.4 (39 reviews) | 
| **Trends Reporting** | Not enough data | Not enough data | 7.1 (38 reviews) | 
| **Dashboards** | Not enough data | Not enough data | 6.8 (38 reviews) | 
| **Advanced Data Filtering** | Not enough data | Not enough data | 7.1 (37 reviews) | 

#### Platform Additional Functionality

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Journey Mapping** | Not enough data | Not enough data | 7.3 (35 reviews) | 
| **Integrations** | Not enough data | Not enough data | 7.4 (33 reviews) | 
| **Automated Alerts** | Not enough data | Not enough data | 6.9 (35 reviews) | 

#### Agentic AI - Customer Journey Analytics

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 7.8 (9 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.2 (9 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 7.6 (9 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 8.0 (9 reviews) | 

### Communication Platform as a Service (CPaaS)

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | N/A | N/A |

#### Functionality

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Ease Of Integration** | Not enough data | Not enough data | Not enough data | 
| **API Call Speed** | Not enough data | Not enough data | Not enough data | 
| **Communication Varieties** | Not enough data | Not enough data | Not enough data | 

#### Support

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Documentation** | Not enough data | Not enough data | Not enough data | 
| **Community Support** | Not enough data | Not enough data | Not enough data | 
| **Professional Support** | Not enough data | Not enough data | Not enough data | 

### Proactive Notification

| Product | Score | Reviews |
|---|---|---|
| **Knock** | 8.9/10 | 48 |
| **OneSignal** | 8.6/10 | 147 |
| **Iterable** | N/A | N/A |

#### Messaging Channels

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **SMS Messaging** | 8.5 (28 reviews) | 8.0 (82 reviews) | Not enough data | 
| **Email** | 9.3 (45 reviews) | 8.7 (95 reviews) | Not enough data | 
| **Voice Messaging** | Feature Not Available | 7.2 (70 reviews) | Not enough data | 
| **Two way messaging** | Feature Not Available | Feature Not Available | Not enough data | 

#### Administration

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Scheduling** | 8.8 (36 reviews) | 9.2 (120 reviews) | Not enough data | 
| **Triggered Notifications** | 9.5 (43 reviews) | 9.2 (123 reviews) | Not enough data | 
| **Segmentation** | 7.8 (21 reviews) | 9.0 (124 reviews) | Not enough data | 
| **Integrations** | 9.3 (36 reviews) | 8.9 (119 reviews) | Not enough data | 

### Notification Infrastructure

| Product | Score | Reviews |
|---|---|---|
| **Knock** | 8.4/10 | 82 |
| **OneSignal** | N/A | N/A |
| **Iterable** | N/A | N/A |

#### Consolidation - Notification Infrastructure

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Automation** | 8.7 (76 reviews) | Not enough data | Not enough data | 
| **API Integration** | 9.2 (78 reviews) | Not enough data | Not enough data | 
| **Template** | 8.5 (76 reviews) | Not enough data | Not enough data | 

#### Customization - Notification Infrastructure

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **User Preference** | 8.8 (78 reviews) | Not enough data | Not enough data | 
| **Analytics** | 7.7 (76 reviews) | Not enough data | Not enough data | 
| **Drag and Drop** | 7.7 (75 reviews) | Not enough data | Not enough data | 

### WhatsApp Marketing

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | N/A | N/A |

#### WhatsApp Messaging - WhatsApp Marketing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Transactional Messages** | Not enough data | Not enough data | Not enough data | 
| **Bulk WhatsApp Messaging** | Not enough data | Not enough data | Not enough data | 
| **Conversational Messaging** | Not enough data | Not enough data | Not enough data | 
| **Personalization** | Not enough data | Not enough data | Not enough data | 
| **Promotional Messages** | Not enough data | Not enough data | Not enough data | 
| **Automated Replies** | Not enough data | Not enough data | Not enough data | 

#### WhatsApp Business Platform - WhatsApp Marketing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Segmentation** | Not enough data | Not enough data | Not enough data | 
| **API Integration** | Not enough data | Not enough data | Not enough data | 
| **WhatsApp Commerce** | Not enough data | Not enough data | Not enough data | 
| **Analytics** | Not enough data | Not enough data | Not enough data | 

### Personalization

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | 7.3/10 | 16 |

#### Agentic AI - Personalization

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Autonomous Task Execution** | Not enough data | Not enough data | 7.4 (15 reviews) | 
| **Cross-system Integration** | Not enough data | Not enough data | 7.2 (16 reviews) | 
| **Adaptive Learning** | Not enough data | Not enough data | 7.4 (15 reviews) | 
| **Natural Language Interaction** | Not enough data | Not enough data | 7.5 (14 reviews) | 
| **Proactive Assistance** | Not enough data | Not enough data | 7.3 (14 reviews) | 
| **Decision Making** | Not enough data | Not enough data | 7.3 (14 reviews) | 

### RCS Business Messaging

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | N/A | N/A |
| **Iterable** | N/A | N/A |

#### Messaging - RCS Business Messaging

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **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 | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **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 | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **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 | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **AI** | Not enough data | Not enough data | Not enough data | 

### Mobile Marketing

| Product | Score | Reviews |
|---|---|---|
| **Knock** | N/A | N/A |
| **OneSignal** | 8.6/10 | 223 |
| **Iterable** | 7.6/10 | 191 |

#### Analysis

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Application Attribution** | Not enough data | 8.7 (97 reviews) | 7.3 (124 reviews) ✓ Verified | 
| **Campaign Analysis** | Not enough data | 8.7 (170 reviews) ✓ Verified | 7.7 (170 reviews) ✓ Verified | 
| **Uninstall Tracking** | Not enough data | 8.2 (142 reviews) | 6.5 (113 reviews) ✓ Verified | 
| **Custom Dashboards** | Not enough data | 8.3 (151 reviews) | 6.9 (139 reviews) ✓ Verified | 

#### Campaigns

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Proximity Marketing** | Not enough data | 8.7 (147 reviews) ✓ Verified | 7.0 (113 reviews) | 
| **Push Notifications** | Not enough data | 9.5 (194 reviews) ✓ Verified | 8.3 (146 reviews) ✓ Verified | 
| **Bulk SMS** | Not enough data | 8.1 (80 reviews) | 7.7 (124 reviews) ✓ Verified | 
| **Two-Way Text Messaging** | Not enough data | Feature Not Available | 6.0 (101 reviews) ✓ Verified | 
| **Email Campaigns** | Not enough data | 8.4 (138 reviews) | 9.3 (167 reviews) ✓ Verified | 
| **Audience Segmentation** | Not enough data | 8.8 (181 reviews) | 9.1 (165 reviews) ✓ Verified | 

#### Engagement

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Coupons and Promotions** | Not enough data | 8.2 (135 reviews) | 7.1 (109 reviews) ✓ Verified | 

#### Platform

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Optimization** | Not enough data | 8.9 (148 reviews) | 8.2 (143 reviews) ✓ Verified | 
| **Integrations - Mobile Marketing** | Not enough data | 9.0 (156 reviews) ✓ Verified | 7.8 (126 reviews) | 
| **Internationalization** | Not enough data | 8.7 (141 reviews) | 7.2 (112 reviews) ✓ Verified | 

#### Agentic AI - Mobile Marketing

| Feature | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **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):** [Push Notification Software](https://www.g2.com/categories/push-notification)

**Unique to Knock (4):** [Notification Infrastructure Software](https://www.g2.com/categories/notification-infrastructure), [Transactional Email Software](https://www.g2.com/categories/transactional-email), [Proactive Notification Software](https://www.g2.com/categories/proactive-notification), [Communication Platform as a Service (cPaaS) Platforms](https://www.g2.com/categories/communication-platform-as-a-service-cpaas)

**Unique to OneSignal (5):** [Mobile Marketing Software](https://www.g2.com/categories/mobile-marketing), [Proactive Notification Software](https://www.g2.com/categories/proactive-notification), [Marketing Automation Software](https://www.g2.com/categories/marketing-automation), [SMS Marketing Software](https://www.g2.com/categories/sms-marketing), [ RCS Business Messaging Software](https://www.g2.com/categories/rcs-business-messaging)

**Unique to Iterable (9):** [Marketing Automation Software](https://www.g2.com/categories/marketing-automation), [Personalization Software](https://www.g2.com/categories/personalization), [Personalization Engines](https://www.g2.com/categories/personalization-engines), [SMS Marketing Software](https://www.g2.com/categories/sms-marketing), [Mobile Marketing Software](https://www.g2.com/categories/mobile-marketing), [WhatsApp Marketing Software](https://www.g2.com/categories/whatsapp-marketing), [Email Template Builder Software](https://www.g2.com/categories/email-template-builder), [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)


---
## Reviewer Demographics

### By Company Size

| Segment | Knock | OneSignal | Iterable | 
|---|---|---|---|
| **Small-Business** | 76.3% | 64.9% | 26.9% | 
| **Mid-Market** | 22.3% | 28.2% | 55.7% | 
| **Enterprise** | 1.4% | 6.9% | 17.5% | 

### By Industry

#### Knock

- **Computer Software:** 33.3%
- **Information Technology and Services:** 8.9%
- **Financial Services:** 7.4%
- **Accounting:** 3.7%
- **Marketing and Advertising:** 3.7%
- **Human Resources:** 3.0%
- **Internet:** 3.0%
- **Logistics and Supply Chain:** 3.0%
- **E-Learning:** 2.2%
- **Leisure, Travel & Tourism:** 2.2%
- **Other:** 29.6%

#### OneSignal

- **Computer Software:** 12.8%
- **Information Technology and Services:** 10.0%
- **Financial Services:** 6.0%
- **Health, Wellness and Fitness:** 4.4%
- **Online Media:** 3.9%
- **Computer Games:** 3.9%
- **Entertainment:** 3.7%
- **Marketing and Advertising:** 3.1%
- **Consumer Services:** 2.9%
- **Education Management:** 2.6%
- **Other:** 46.5%

#### Iterable

- **Marketing and Advertising:** 11.2%
- **Health, Wellness and Fitness:** 8.6%
- **Financial Services:** 7.6%
- **Information Technology and Services:** 5.4%
- **Computer Software:** 4.5%
- **Internet:** 4.0%
- **Consumer Goods:** 3.9%
- **Leisure, Travel & Tourism:** 3.7%
- **Real Estate:** 3.6%
- **Retail:** 3.3%
- **Other:** 44.2%

---
## Alternatives

### Alternatives to Knock

- [Courier](https://www.g2.com/products/courier/reviews) — 4.5/5 stars (59 reviews)
- [SuprSend](https://www.g2.com/products/suprsend/reviews) — 4.8/5 stars (127 reviews)
- [MoEngage](https://www.g2.com/products/moengage/reviews) — 4.5/5 stars (524 reviews)
- [Customer.io](https://www.g2.com/products/customer-io/reviews) — 4.4/5 stars (836 reviews)
- [Braze](https://www.g2.com/products/braze/reviews) — 4.5/5 stars (1684 reviews)
- [CleverTap](https://www.g2.com/products/clevertap/reviews) — 4.6/5 stars (664 reviews)
- [Omnisend](https://www.g2.com/products/omnisend/reviews) — 4.6/5 stars (1193 reviews)
- [Agentforce Marketing (formerly Salesforce Marketing Cloud)](https://www.g2.com/products/agentforce-marketing-formerly-salesforce-marketing-cloud/reviews) — 4.0/5 stars (4628 reviews)
- [Dotdigital](https://www.g2.com/products/dotdigital/reviews) — 4.4/5 stars (1215 reviews)
- [Brevo Marketing Platform](https://www.g2.com/products/brevo-marketing-platform/reviews) — 4.5/5 stars (2571 reviews)

### Alternatives to OneSignal

- [Braze](https://www.g2.com/products/braze/reviews) — 4.5/5 stars (1684 reviews)
- [MoEngage](https://www.g2.com/products/moengage/reviews) — 4.5/5 stars (524 reviews)
- [Customer.io](https://www.g2.com/products/customer-io/reviews) — 4.4/5 stars (836 reviews)
- [Insider One](https://www.g2.com/products/insider-one/reviews) — 4.8/5 stars (1376 reviews)
- [CleverTap](https://www.g2.com/products/clevertap/reviews) — 4.6/5 stars (664 reviews)
- [WebEngage](https://www.g2.com/products/webengage/reviews) — 4.5/5 stars (764 reviews)
- [Pushwoosh](https://www.g2.com/products/pushwoosh/reviews) — 4.4/5 stars (49 reviews)
- [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.6/5 stars (1355 reviews)
- [SendPulse](https://www.g2.com/products/sendpulse/reviews) — 4.6/5 stars (714 reviews)
- [PushEngage](https://www.g2.com/products/pushengage/reviews) — 4.6/5 stars (53 reviews)

### Alternatives to Iterable

- [Braze](https://www.g2.com/products/braze/reviews) — 4.5/5 stars (1684 reviews)
- [Insider One](https://www.g2.com/products/insider-one/reviews) — 4.8/5 stars (1376 reviews)
- [MoEngage](https://www.g2.com/products/moengage/reviews) — 4.5/5 stars (524 reviews)
- [Klaviyo](https://www.g2.com/products/klaviyo/reviews) — 4.6/5 stars (1355 reviews)
- [Bloomreach](https://www.g2.com/products/bloomreach-bloomreach/reviews) — 4.6/5 stars (767 reviews)
- [Customer.io](https://www.g2.com/products/customer-io/reviews) — 4.4/5 stars (836 reviews)
- [SAP Engagement Cloud (formerly SAP Emarsys)](https://www.g2.com/products/sap-engagement-cloud-formerly-sap-emarsys/reviews) — 4.2/5 stars (629 reviews)
- [CleverTap](https://www.g2.com/products/clevertap/reviews) — 4.6/5 stars (664 reviews)
- [Ortto](https://www.g2.com/products/ortto/reviews) — 4.4/5 stars (624 reviews)
- [Agentforce Marketing (formerly Salesforce Marketing Cloud)](https://www.g2.com/products/agentforce-marketing-formerly-salesforce-marketing-cloud/reviews) — 4.0/5 stars (4628 reviews)

---
## Top Discussions

### Knock

No discussions available for this product.

### OneSignal

- Title: [What is OneSignal used for?](https://www.g2.com/discussions/what-is-onesignal-used-for) — 3 comments, 3 upvotes
  > **Top comment:** "OneSignal is a customer engagement platform primarily used for sending push notifications, email notifications, and in-app messaging. 

"
- Title: [Is One signal a good push notifications service](https://www.g2.com/discussions/is-one-signal-a-good-push-notifications-service) — 3 comments, 1 upvote
  > **Top comment:** "Yes it is"
- Title: [When will you add monitization options?](https://www.g2.com/discussions/24867-when-will-you-add-monitization-options) — 2 comments, 1 upvote
  > **Top comment:** "in my opinion and experience using one signal, you cant monetize the message itself, but you can direct your users to any monetized website and read..."
- Title: [Easy to use](https://www.g2.com/discussions/onesignal-easy-to-use) — 1 comment, 1 upvote
  > **Top comment:** "Certainly"
- Title: [How can I download a report of the goblad outcomes of my push notifications](https://www.g2.com/discussions/how-can-i-download-a-report-of-the-goblad-outcomes-of-my-push-notifications) — 1 comment, 1 upvote
  > **Top comment:** "you need to update your plan to a paid plan ... then you can export it from the page of the message, below the chart."

### Iterable

- Title: [How did you learn to use handlebars?](https://www.g2.com/discussions/27253-how-did-you-learn-to-use-handlebars) — 3 comments, 3 upvotes
  > **Top comment:** "Trial and error so far, I wish they had a catalog of video courses to take that drill down into specific features like this with examples. It looks like..."
- Title: [What is Iterable?](https://www.g2.com/discussions/what-is-iterable) — 2 comments
  > **Top comment:** "sddfgdfgdfgdfg"
- Title: [What is iterable in Java?](https://www.g2.com/discussions/what-is-iterable-in-java) — 1 comment
  > **Top comment:** "Hi there, here is a link with more information on this. 
https://download.java.net/java/early_access/loom/docs/api/java.base/java/lang/Iterable.html"
- Title: [How much does iterable cost?](https://www.g2.com/discussions/how-much-does-iterable-cost) — 1 comment
  > **Top comment:** "Hi there, please send your question using the "Contact Iterable" form button on our G2 profile and someone from our team will be in touch with you shortly on..."
- Title: [Has anyone used the "abbreviate" handlebar helper in Iterable? I keep getting an error.](https://www.g2.com/discussions/26628-has-anyone-used-the-abbreviate-handlebar-helper-in-iterable-i-keep-getting-an-error) — 1 comment, 1 upvote *(includes official response)*
  > **Top comment:** "Following"

---
**Source:** [G2.com](https://www.g2.com) | [Comparison Page](https://www.g2.com/compare/knock-knock-vs-onesignal-vs-iterable)