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# Courier vs Knock Comparison - What are their main differences?

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CourierKnock[+ Add Product](#)

Reviews

**Courier** [

4.5/5(59)

](https://www.g2.com/products/courier/reviews#reviews)

**Knock** [

4.6/5(149)

](https://www.g2.com/products/knock-knock/reviews#reviews)

Pricing

**Courier**
Free Trial

**$0.00** · Developer

**Knock**
Free Trial

**Free** · Developer

**Pricing Insights**
from reviews

Time to Implement

**Courier**
1 month

Based on 20 responses

**Knock**
1 month

Based on 37 responses

Return on Investment

**Courier**
5 months

Based on 14 responses

**Knock**
5 months

Based on 32 responses

Perceived Cost

**Courier**
$$$$$

**Knock**
$$$$$

Average Discount

**Courier**
15%3% more

**Knock**
12%

 ![Courier](https://images.g2crowd.com/uploads/product/hd_favicon/6b416e1dcae726ce45a778a097d056ba/courier.svg "Courier")

 ![Knock](https://images.g2crowd.com/uploads/product/hd_favicon/a1177dd06394eea862138943c59f4c8a/knock1.svg "Knock")

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Pros & Cons

**Courier**
[
Customer Support (1)
](https://www.g2.com/products/courier/reviews?filters%5Bsentiment_snippet%5D=2027123&qs=pros-and-cons#reviews)[
Ease of Use (1)
](https://www.g2.com/products/courier/reviews?filters%5Bsentiment_snippet%5D=1606158&qs=pros-and-cons#reviews)[
API Integration Issues (1)
](https://www.g2.com/products/courier/reviews?filters%5Bsentiment_snippet%5D=2027133&qs=pros-and-cons#reviews)[
Customization Difficulty (1)
](https://www.g2.com/products/courier/reviews?filters%5Bsentiment_snippet%5D=1606076&qs=pros-and-cons#reviews)

**Knock**
[
Ease of Use (39)
](https://www.g2.com/products/knock-knock/reviews?filters%5Bsentiment_snippet%5D=1145404&qs=pros-and-cons#reviews)[
Notifications (34)
](https://www.g2.com/products/knock-knock/reviews?filters%5Bsentiment_snippet%5D=1145829&qs=pros-and-cons#reviews)[
Missing Features (19)
](https://www.g2.com/products/knock-knock/reviews?filters%5Bsentiment_snippet%5D=1143891&qs=pros-and-cons#reviews)[
Insufficient Features (8)
](https://www.g2.com/products/knock-knock/reviews?filters%5Bsentiment_snippet%5D=1143317&qs=pros-and-cons#reviews)

Integrations

**Courier**
Not enough data

**Knock**
[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_df50036558538c4b484c382253d8600a/activecampaign-postmark.png "Product Avatar Image")

ActiveCampaign Postmark

](https://www.g2.com/products/activecampaign-postmark/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_b3390b4cc3d92e87d570895f7358c003/amazon-simple-email-service-amazon-ses.jpg "Product Avatar Image")

Amazon

](https://www.g2.com/products/amazon-simple-email-service-amazon-ses/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_766b355766e02ca9c3724c86c7e204d9/bird.png "Product Avatar Image")

Bird

](https://www.g2.com/products/bird/reviews)[

 ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_9ba3005f072871a7f25075eb4847258f/census.png "Product Avatar Image")

Census

](https://www.g2.com/products/census/reviews)[
View all
](https://www.g2.com/products/knock-knock/integrations)

Screenshots

**Courier**
 ![Courier screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/1821589/Screenshot-2026-07-31-at-10.07.37-AM.png)

**Knock**
 ![Knock screenshot](https://images.g2crowd.com/cdn-cgi/image/width=600,height=600,fit=scale-down,format=auto,onerror=redirect,/https://images.g2crowd.com/uploads/attachment/file/1474827/broadcasts-multi-step.png)

Ratings

Meets Requirements

**Courier**

9.0

9.049

**Knock**

9.0

9.0131

Ease of Use

**Courier**

9.0

9.049

**Knock**

8.7

8.7136

Ease of Setup

**Courier**

8.9

8.936

**Knock**

8.7

8.798

Ease of Admin

**Courier**

8.9

8.932

**Knock**

9.0

9.060

Quality of Support

**Courier**

9.5

9.544

**Knock**

9.7

9.7109

Has the product been a good partner in doing business?

**Courier**

9.7

9.729

**Knock**

9.5

9.556

Product Direction (% positive)

**Courier**

9.4

9.439

**Knock**

9.6

9.6135

Features

Transactional Email[Hide 54 FeaturesShow 54 Features](javascript:void(0);)

8.4

23

8.3

80

Administration

Template Creation

8.6(won by 0.4)

23

8.2

79

Custom Unsubscribe

7.3

14

7.5(won by 0.2)

53

Email Segmentation

8.1

14

8.2(won by 0.1)

54

Detailed Server Logs

8.9(won by 0.5)

21

 (There is a greater than 0.5 difference between this product's rating and its competitors)

8.4

74

Alerts/Notifications

9.2(tied score)

17

9.2(tied score)

76

Preset Template Availability

Feature Not Available

7.0(won by default)

67

Drip Campaigns

Not enough data

Not enough data

Customer Segmentation

Not enough data

Not enough data

Integrations

Webhooks

8.6

12

8.8(won by 0.2)

64

Event Tracking API

8.7(won by 0.4)

14

8.3

59

Mail Send API

9.3(won by 0.3)

20

9.0

68

Spam Filter Testing

8.5(won by 1.0)

11

 (There is a greater than 0.5 difference between this product's rating and its competitors)

7.5

43

Activity Dashboard

Not enough data

Not enough data

Activity Tracking

Not enough data

Not enough data

A/B Testing

Not enough data

Not enough data

Platform

Custom Tracking Domain

8.7(won by 0.3)

15

8.4

44

Multiple Domains

7.6

12

8.1(won by 0.5)

43

 (There is a greater than 0.5 difference between this product's rating and its competitors)

Dedicated IP

7.2

9

7.6(won by 0.4)

41

Documentation

8.6

22

8.8(won by 0.2)

74

Sender Reputation Management

7.7

11

7.8(won by 0.1)

41

Tracking & Reporting

8.1

19

8.4(won by 0.3)

60

Enterprise Scalability

8.3

18

8.6(won by 0.3)

54

Performance and Reliability

9.4(tied score)

22

9.4(tied score)

72

Workflow Management

Not enough data

Not enough data

List Management

Not enough data

Not enough data

Template Management

Not enough data

Not enough data

Email Management

Not enough data

Not enough data

Subscription Management

Not enough data

Not enough data

Click Tracking

Not enough data

Not enough data

Additional Functionality

Third-Party Integrations

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Email Monitoring

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

WYSIWYG Editor

Not enough data

Not enough data

Real-Time Data

Not enough data

Not enough data

Unsubscribe Database

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Geolocation

Not enough data

Not enough data

Event Triggered Actions

Not enough data

Not enough data

Simple Mail Transfer Protocol (SMTP)

Not enough data

Not enough data

Contact Database

Not enough data

Not enough data

Campaign Analytics

Not enough data

Not enough data

SMS Messaging

Not enough data

Not enough data

Customizable Forms

Not enough data

Not enough data

Autoresponders

Not enough data

Not enough data

Email Marketing

Not enough data

Not enough data

Message Personalization

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Dynamic Content

Not enough data

Not enough data

Customizable Fields

Not enough data

Not enough data

Campaign Scheduling

Not enough data

Not enough data

Email Distribution

Not enough data

Not enough data

Push Notification[Hide 42 FeaturesShow 42 Features](javascript:void(0);)

8.5

17

7.9

62

Campaigns

Customize

8.8(won by 0.1)

13

8.7

58

Scheduling

9.0

10

9.1(won by 0.1)

53

Retarget

7.8(won by 0.1)

6

7.7

35

Segmentation

7.7(won by 0.3)

5

7.4

37

Triggered Notifications

9.1(won by 0.1)

9

9.0

59

Customer Segmentation

Not enough data

Not enough data

Analytics

Campaign Performance

7.8(won by 0.7)

9

 (There is a greater than 0.5 difference between this product's rating and its competitors)

7.1

33

Audience Insights

8.2(won by 1.3)

10

 (There is a greater than 0.5 difference between this product's rating and its competitors)

6.9

37

Drip Campaigns

Not enough data

Not enough data

Optimization

Personalization

8.6

13

8.7(won by 0.1)

53

Rich Notifications

8.7

15

8.8(won by 0.1)

46

Integrations

8.9(won by 0.2)

11

8.7

52

A/B Testing

Not enough data

6.9(won by default)

32

App Notifications

Not enough data

Not enough data

SMS Notifications

Not enough data

Not enough data

Web Notifications

Not enough data

Not enough data

Agentic AI - Push Notification

Autonomous Task Execution

Not enough data

7.2(won by default)

6

Adaptive Learning

Not enough data

6.9(won by default)

6

Proactive Assistance

Not enough data

7.5(won by default)

6

AI/Machine Learning

Not enough data

Not enough data

Additional Functionality

Multi-Channel Marketing

Not enough data

Not enough data

API

Not enough data

Not enough data

Drag & Drop

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Event Triggered Actions

Not enough data

Not enough data

Multi-Language

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Template Management

Not enough data

Not enough data

Geotargeting

Not enough data

Not enough data

Customer Journey Mapping

Not enough data

Not enough data

Subscriber Management

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Visual Workflow Management

Not enough data

Not enough data

Authentication

Not enough data

Not enough data

Conversion Tracking

Not enough data

Not enough data

Behavior Tracking

Not enough data

Not enough data

Engagement Tracking

Not enough data

Not enough data

Contact Management

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Campaign Management

Not enough data

Not enough data

Notification Editor

Not enough data

Not enough data

Workflow Automation

Not enough data

Not enough data

Proactive Notification[Hide 8 FeaturesShow 8 Features](javascript:void(0);)

8.8

15

8.9

48

Messaging Channels

SMS Messaging

8.8(won by 0.3)

12

8.5

28

Email

9.5(won by 0.2)

14

9.3

45

Voice Messaging

Feature Not Available

Feature Not Available

Two way messaging

Feature Not Available

Feature Not Available

Administration

Scheduling

8.5

10

8.8(won by 0.3)

36

Triggered Notifications

8.8

12

9.5(won by 0.7)

43

 (There is a greater than 0.5 difference between this product's rating and its competitors)

Segmentation

8.3(won by 0.5)

7

 (There is a greater than 0.5 difference between this product's rating and its competitors)

7.8

21

Integrations

8.9

12

9.3(won by 0.4)

36

Notification Infrastructure[Hide 6 FeaturesShow 6 Features](javascript:void(0);)

Not enough data

8.4

83

Consolidation - Notification Infrastructure

Automation

Not enough data

8.7(won by default)

77

API Integration

Not enough data

9.2(won by default)

79

Template

Not enough data

8.5(won by default)

77

Customization - Notification Infrastructure

User Preference

Not enough data

8.8(won by default)

78

Analytics

Not enough data

7.7(won by default)

76

Drag and Drop

Not enough data

7.7(won by default)

75

Show 1 feature category with incomplete data

Communication Platform as a Service (CPaaS)[Hide 41 FeaturesShow 41 Features](javascript:void(0);)

Not enough data

Not enough data

Additional Functionality

Automated Responses

Not enough data

Not enough data

Chat/Messaging

Not enough data

Not enough data

Generative AI

Not enough data

Not enough data

Call Recording

Not enough data

Not enough data

Activity Dashboard

Not enough data

Not enough data

Sentiment Analysis

Not enough data

Not enough data

Communication Management

Not enough data

Not enough data

Real-Time Reporting

Not enough data

Not enough data

SMS Messaging

Not enough data

Not enough data

Interaction Tracking

Not enough data

Not enough data

Audio/Video Conferencing

Not enough data

Not enough data

Call Monitoring

Not enough data

Not enough data

Customizable Branding

Not enough data

Not enough data

Call Routing

Not enough data

Not enough data

Contact Management

Not enough data

Not enough data

Voice Mail

Not enough data

Not enough data

Multi-Language

Not enough data

Not enough data

Two-Way Audio & Video

Not enough data

Not enough data

Real-Time Updates

Not enough data

Not enough data

Chat Transcript

Not enough data

Not enough data

Reporting/Analytics

Not enough data

Not enough data

Live Chat

Not enough data

Not enough data

Caller ID

Not enough data

Not enough data

IVR

Not enough data

Not enough data

Real-Time Monitoring

Not enough data

Not enough data

SMS Marketing

Not enough data

Not enough data

File Sharing

Not enough data

Not enough data

Fax Management

Not enough data

Not enough data

API

Not enough data

Not enough data

AI Copilot

Not enough data

Not enough data

Chatbot

Not enough data

Not enough data

Mobile Access

Not enough data

Not enough data

Functionality

Ease Of Integration

Not enough data

Not enough data

API Call Speed

Not enough data

Not enough data

Unified Communications

Not enough data

Not enough data

Alerts/Notifications

Not enough data

Not enough data

Computer Telephony Integration

Not enough data

Not enough data

Multi-Channel Communication

Not enough data

Not enough data

Support

Documentation

Not enough data

Not enough data

Community Support

Not enough data

Not enough data

Professional Support

Not enough data

Not enough data

User Insights

Reviewers' Company Size

[![Courier](https://images.g2crowd.com/uploads/product/hd_favicon/6b416e1dcae726ce45a778a097d056ba/courier.svg "Courier")](https://www.g2.com/products/courier/reviews)

Courier

Small-Business(50 or fewer emp.)

74.6%

Mid-Market(51-1000 emp.)

22.0%

Enterprise(\> 1000 emp.)

3.4%

[![Knock](https://images.g2crowd.com/uploads/product/hd_favicon/a1177dd06394eea862138943c59f4c8a/knock1.svg "Knock")](https://www.g2.com/products/knock-knock/reviews)

Knock

Small-Business(50 or fewer emp.)

75.9%

Mid-Market(51-1000 emp.)

22.0%

Enterprise(\> 1000 emp.)

2.1%

Small-Business

(50 or fewer emp.)

74.6%

75.9%

Mid-Market

(51-1000 emp.)

22.0%

22.0%

Enterprise

(\> 1000 emp.)

3.4%

2.1%

Reviewers' Industry

[![Courier](https://images.g2crowd.com/uploads/product/hd_favicon/6b416e1dcae726ce45a778a097d056ba/courier.svg "Courier")](https://www.g2.com/products/courier/reviews)
Courier

Computer Software

40.7%

Information Technology and Services

13.6%

Human Resources

8.5%

Computer & Network Security

5.1%

Higher Education

3.4%

Other

28.8%

[![Knock](https://images.g2crowd.com/uploads/product/hd_favicon/a1177dd06394eea862138943c59f4c8a/knock1.svg "Knock")](https://www.g2.com/products/knock-knock/reviews)
Knock

Computer Software

33.1%

Information Technology and Services

8.8%

Financial Services

7.4%

Accounting

3.7%

Marketing and Advertising

3.7%

Other

43.4%

FAQs

## Courier vs Knock FAQs

Generated using AI

Last updated: August 15, 2026

### What is the difference between Courier vs Knock?

Knock stands out for its higher G2 rating, more robust reviewer-cited strengths, and broader support for preset templates, while Courier is noted for its ease of use and customer support.

| [Courier](https://www.g2.com/products/courier/reviews) | [Knock](https://www.g2.com/products/knock-knock/reviews) |
| --- | --- |
| 4.5/5 (59 reviews) | 4.6/5 (147 reviews) |
| — | — |
| 8.9 | 8.7 |
| 9.5 | 9.7 |
| Ease of Use | Ease of Use |

### How do the pricing models of Courier and Knock compare?

Knock is rated higher for price and value satisfaction, with reviewers expressing strong approval of its pricing model.

- **Courier:** Reviewers highlight the affordability of paid plans and appreciate the generous developer plan, especially for startups and small teams.
- **Knock:** Reviewers consistently praise the generous free tier and find the pricing model friendly for both small and large teams, with value cited as a key reason for switching.

### What are the best alternatives to Courier and Knock?

The top three alternatives to Courier and Knock are OneSignal, SuprSend, and Twilio SendGrid Email API.

| Product | G2 Rating (reviews) | Largest Segment | Pricing Insight | Top Reviewer-Cited Strength |
| --- | --- | --- | --- | --- |
| [Courier](https://www.g2.com/products/courier/reviews) | 4.5/5 (59 reviews) | — | Affordable paid plans, generous developer plan | Ease of Use |
| [Knock](https://www.g2.com/products/knock-knock/reviews) | 4.6/5 (147 reviews) | — | Generous free tier, friendly pricing for teams | Ease of Use |
| [OneSignal](https://www.g2.com/products/onesignal/reviews) | 4.7/5 (1228 reviews) | Small-Business | — | Ease of Use |
| [SuprSend](https://www.g2.com/products/suprsend/reviews) | 4.8/5 (128 reviews) | Small-Business | — | Ease of Use |
| [Twilio SendGrid Email API](https://www.g2.com/products/twilio-sendgrid-email-api/reviews) | 4.0/5 (368 reviews) | Small-Business | — | Email Deliverability |

### Which Notification Infrastructure features should I prioritize when comparing Courier and Knock?

Buyers should prioritize integrations, template management, workflow automation, email capabilities, and customer support when comparing Courier and Knock.

- **Integrations:** Knock is cited in 19 all-time reviews for integrations, with specific mentions of Slack (30 all-time), Expo, and Twilio; Courier reviewers mention integration ease but with fewer cited integrations.
- **Template Management:** Knock offers preset template availability, a feature not cited for Courier; both products are praised for ease of use in template design.
- **Workflow Automation:** Knock is mentioned in 18 all-time reviews for automation features, while Courier reviewers highlight notification scheduling and workflow features qualitatively.
- **Email Capabilities:** Both products are frequently praised for email features, with Knock reviewers noting robust email workflow management and Courier reviewers highlighting drag-and-drop email design.
- **Customer Support:** Knock is cited in 24 all-time reviews for customer support, while Courier is mentioned in 1 all-time review for support, with both products receiving positive qualitative feedback in recent reviews.

### What are the pros and cons of Courier vs Knock?

Knock's headline strength is its robust integrations and workflow automation, while Courier is most noted for ease of use and customer support.

- **Courier strengths:** Ease of use (2 all-time mentions), customer support (1 all-time mention), notification scheduling, and dynamic email design.
- **Courier trade-offs:** Reviewers note limited customization, API integration issues, and missing features (each with 1 all-time mention).
- **Knock strengths:** Ease of use (33 all-time mentions), notifications (30), easy setup (26), customer support (24), integrations (19), automation (18), and API quality (17).
- **Knock trade-offs:** Reviewers mention missing features (15 all-time mentions), notification issues (8), and some limitations in template flexibility and documentation.

### Is Courier or Knock better for small businesses?

Knock is the better fit for small businesses, with a larger share of small-business reviewers and consistently strong sentiment from that segment.

- **Courier:** Small-business reviewers highlight ease of use and affordable plans, but Knock receives more frequent and recent praise from this segment.
- **Knock:** Small-business reviewers consistently cite easy setup, robust features, and strong support as key benefits.

### Which Notification Infrastructure platform has better integrations?

Knock is favored by reviewers for integrations, with more cited integrations and higher all-time mention counts.

- **Courier:** Reviewers mention ease of integration with multiple channels, but specific third-party integrations are less frequently cited.
- **Knock:** Slack integration is cited in 30 all-time reviews, with additional mentions for Expo and Twilio; integrations are highlighted in 19 all-time reviews.

### How do Courier and Knock compare on customer support?

Knock and Courier are rated at parity for Quality of Support, with Knock at 9.7 and Courier at 9.5, a difference below the materiality threshold.

- **Courier:** Reviewers describe customer support as responsive, helpful, and proactive in resolving issues.
- **Knock:** Reviewers consistently praise Knock's support team for fast response times, dedicated Slack channels, and outstanding assistance.

### Which is easier to implement, Courier or Knock?

Courier and Knock are rated at parity for Ease of Setup, with scores of 8.9 and 8.7 respectively, indicating both are easy to implement.

- **Courier:** Reviewers highlight fast implementation, easy UI, and straightforward integration, with setup often completed in under a day.
- **Knock:** Reviewers consistently cite easy onboarding, intuitive setup, and rapid integration, with many noting setup completed in a few hours to a week.

### Which product has better Email?

Knock is favored for Email, with more robust workflow management and higher reviewer-cited strengths in email capabilities.

- **Courier:** Reviewers praise the drag-and-drop email designer and dynamic email creation, with templates and personalization cited in 1 all-time mention each.
- **Knock:** Reviewers highlight robust email workflow management, easy template creation, and strong support for transactional and in-app email notifications, with email features frequently cited in recent reviews.

Alternatives

**Courier Alternatives**

 ![OneSignal](https://images.g2crowd.com/uploads/product/hd_favicon/8673c259241abc89782745e0f4687f64/onesignal.svg "OneSignal")

[
OneSignal
](/products/onesignal/reviews)

 ![Customer.io](https://images.g2crowd.com/uploads/product/hd_favicon/796a98b0661c81fd4f6aa01f2c7b5c2a/customer-io.svg "Customer.io")

[
Customer.io
](/products/customer-io/reviews)

 ![Twilio SendGrid Email API](https://images.g2crowd.com/uploads/product/hd_favicon/11065b0c84d6d0a6c0a8e8ade2b9467e/twilio-sendgrid-email-api.svg "Twilio SendGrid Email API")

[
Twilio SendGrid Email API
](/products/twilio-sendgrid-email-api/reviews)

 ![SuprSend](https://images.g2crowd.com/uploads/product/hd_favicon/2dbe923afe0915048ea56d4554a68885/suprsend.svg "SuprSend")

[
SuprSend
](/products/suprsend/reviews)

**Knock Alternatives**

 ![SuprSend](https://images.g2crowd.com/uploads/product/hd_favicon/2dbe923afe0915048ea56d4554a68885/suprsend.svg "SuprSend")

[
SuprSend
](/products/suprsend/reviews)

 ![OneSignal](https://images.g2crowd.com/uploads/product/hd_favicon/8673c259241abc89782745e0f4687f64/onesignal.svg "OneSignal")

[
OneSignal
](/products/onesignal/reviews)

 ![MoEngage](https://images.g2crowd.com/uploads/product/hd_favicon/bd1c9b522032d3a05f46dab9de39c3a0/moengage.svg "MoEngage")

[
MoEngage
](/products/moengage/reviews)

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