Compare Customer.io and Mailgun 
At a Glance
Market Segments
Small-Business (58.8% of reviews)
Small-Business (79.8% of reviews)
Entry-Level Pricing
Starting at $100.00 Per Month
$0.00 Per Month
Customer.io
Star Rating
(732)4.4 out of 5
Market Segments
Small-Business (58.8% of reviews)
Pros & Cons
Entry-Level Pricing
Starting at $100.00 Per Month
Free Trial is available
Browse all 3 pricing plansMailgun
Star Rating
(321)4.2 out of 5
Market Segments
Small-Business (79.8% of reviews)
Pros & Cons
Entry-Level Pricing
$0.00 Per Month
Free Trial is available
Browse all 4 pricing plansSummary
AI Generated Summary
AI-generated. Powered by real user reviews.
- G2 reviewers report that Customer.io excels in providing a robust and flexible platform for email marketing, particularly highlighting its Visual Workflow Builder. Users appreciate how this feature allows them to create complex, logic-based flows effortlessly, making it easier to manage campaigns tailored to specific customer interactions.
- Users say that Mailgun stands out for its developer-friendly API and seamless integration capabilities. Reviewers have noted that the platform is intuitive and well-documented, which simplifies the process of sending transactional emails and system notifications, making it a reliable choice for developers.
- According to verified reviews, Customer.io's commitment to continuous improvement is a significant advantage, with users praising the platform for regularly adding new functionalities, including AI features. This adaptability keeps the tool relevant and powerful for evolving marketing needs.
- Reviewers mention that while Mailgun is highly effective for email delivery, it may not offer the same level of marketing automation features as Customer.io. Users have pointed out that Mailgun focuses primarily on transactional email capabilities, which may limit its appeal for those seeking comprehensive marketing solutions.
- G2 reviewers highlight that Customer.io's strong emphasis on customization allows users to send tailored messages based on specific events and attributes. This level of personalization is a key differentiator that enhances user engagement and improves overall campaign effectiveness.
- Users report that Mailgun's ease of setup and administration is a significant plus, with many finding the onboarding process straightforward. However, some users feel that Customer.io's more complex features may require a steeper learning curve, which could be a consideration for teams with limited technical resources.
Pricing
Entry-Level Pricing
Customer.io
Essentials
Starting at $100.00
Per Month
For small companies who are gaining momentum.
- Send emails, push, in-app, SMS, webhooks
- Track custom events and attributes
- Visual workflow builder
Mailgun
Free
$0.00
Per Month
Flexible plans built for email delivery. Try it out for free. Free plan includes 100 emails/day.
- 100 emails per day
- Ticket support
- RESTful email APIs and SMTP relay
Free Trial
Customer.io
Free Trial is available
Mailgun
Free Trial is available
Ratings
Meets Requirements
8.7
610
8.8
281
Ease of Use
8.3
623
8.7
284
Ease of Setup
7.9
421
8.6
198
Ease of Admin
8.6
278
8.8
184
Quality of Support
8.7
544
8.1
226
Has the product been a good partner in doing business?
9.0
277
8.7
172
Product Direction (% positive)
9.2
598
7.4
282
Features by Category
Email Marketing
8.8
416
|
Verified
Not enough data
8.8
399
|
Verified
Not enough data
8.4
388
|
Verified
Not enough data
8.3
371
|
Verified
Not enough data
Online Marketing
6.3
330
Not enough data
8.0
354
|
Verified
Not enough data
8.3
379
|
Verified
Not enough data
7.9
358
|
Verified
Not enough data
Feature Not Available
Not enough data
Lead Management
7.4
332
|
Verified
Not enough data
7.6
331
Not enough data
8.6
377
|
Verified
Not enough data
6.8
311
Not enough data
7.6
332
|
Verified
Not enough data
7.3
329
|
Verified
Not enough data
7.3
315
Not enough data
7.3
322
|
Verified
Not enough data
Campaign Management
7.7
338
Not enough data
7.0
320
Not enough data
Feature Not Available
Not enough data
Feature Not Available
Not enough data
Social
Feature Not Available
Not enough data
6.5
306
Not enough data
Feature Not Available
Not enough data
Feature Not Available
Not enough data
Feature Not Available
Not enough data
Reporting & Analytics
7.7
374
|
Verified
Not enough data
6.9
332
|
Verified
Not enough data
6.5
322
Not enough data
6.3
311
Not enough data
Feature Not Available
Not enough data
Platform
8.2
369
|
Verified
Not enough data
8.5
366
|
Verified
Not enough data
8.5
358
|
Verified
Not enough data
7.8
329
|
Verified
Not enough data
7.7
347
|
Verified
Not enough data
8.8
359
|
Verified
Not enough data
7.2
312
|
Verified
Not enough data
Agentic AI - Marketing Automation
6.3
66
Not enough data
6.4
67
Not enough data
6.7
62
Not enough data
6.3
64
Not enough data
6.2
63
Not enough data
6.3
66
Not enough data
Integration
8.3
372
|
Verified
Not enough data
8.3
369
|
Verified
Not enough data
7.6
336
|
Verified
Not enough data
Administration
8.1
265
7.1
85
7.4
235
6.9
81
8.1
251
8.1
119
8.9
265
7.7
112
7.7
237
8.4
213
7.8
243
8.2
173
Integrations
8.6
236
8.7
169
8.5
240
8.7
160
8.4
205
9.3
215
7.2
177
7.9
123
Platform
8.2
209
9.0
169
8.2
204
8.8
174
7.9
199
8.1
101
8.2
239
|
Verified
8.7
217
7.8
217
8.2
181
8.2
241
8.5
218
7.9
216
8.5
141
8.8
238
8.9
229
Diagnosis
Not enough data
9.0
5
Not enough data
9.0
5
Not enough data
Not enough data
Not enough data
Not enough data
Tracking
Not enough data
8.7
5
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Reporting
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Agentic AI - Email Deliverability
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Campaigns
8.6
114
Not enough data
8.7
111
Not enough data
8.3
106
Not enough data
8.8
119
Not enough data
8.8
113
Not enough data
Analytics
8.3
114
Not enough data
7.6
104
Not enough data
Optimization
8.5
111
Not enough data
8.8
113
Not enough data
8.0
109
Not enough data
8.4
111
Not enough data
Agentic AI - Push Notification
6.4
14
Not enough data
6.9
14
Not enough data
6.5
14
Not enough data
Text Messaging
8.5
83
Not enough data
Feature Not Available
Not enough data
8.3
79
Not enough data
Feature Not Available
Not enough data
6.8
74
Not enough data
6.5
76
Not enough data
8.7
86
Not enough data
8.2
78
Not enough data
SMS Platform
7.5
81
Not enough data
8.3
84
Not enough data
7.2
72
Not enough data
6.2
70
Not enough data
6.7
70
Not enough data
8.3
82
Not enough data
Agentic AI - SMS Marketing
6.4
17
Not enough data
6.4
17
Not enough data
7.5
17
Not enough data
7.2
17
Not enough data
7.0
17
Not enough data
6.7
18
Not enough data
Platform Basics
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Platform Data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Agentic AI - Email Testing
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Not enough data
Data Sourcing
7.5
92
Not enough data
7.7
94
Not enough data
7.3
96
Not enough data
8.2
94
Not enough data
Intelligence
7.3
90
Not enough data
5.8
87
Not enough data
5.8
86
Not enough data
Generative AI
Not enough data
6.9
6
Not enough data
5.3
6
Agentic AI - Email Verification
Not enough data
Not enough data
Agentic AI - Personalization
5.4
32
Not enough data
6.3
33
Not enough data
5.7
32
Not enough data
5.7
32
Not enough data
5.4
32
Not enough data
5.5
33
Not enough data
Analysis
Feature Not Available
Not enough data
8.0
68
Not enough data
6.2
55
Not enough data
Feature Not Available
Not enough data
Campaigns
7.3
56
Not enough data
8.0
62
Not enough data
7.3
61
Not enough data
Feature Not Available
Not enough data
9.3
68
Not enough data
9.2
70
Not enough data
Engagement
6.9
53
Not enough data
Platform
8.0
61
Not enough data
Feature Not Available
Not enough data
7.6
59
Not enough data
Agentic AI - Mobile Marketing
6.7
6
Not enough data
7.2
6
Not enough data
6.1
6
Not enough data
6.7
6
Not enough data
6.4
6
Not enough data
6.9
6
Not enough data
Categories
Categories
Shared Categories
Customer.io and Mailgun are categorized as Transactional Email
Unique Categories
Customer.io is categorized as SMS Marketing, Personalization, Push Notification, Mobile Marketing, Marketing Automation, and Customer Data Platform (CDP)
Reviews
Reviewers' Company Size
Customer.io
Small-Business(50 or fewer emp.)
Mid-Market(51-1000 emp.)
Enterprise(> 1000 emp.)
Mailgun
Small-Business(50 or fewer emp.)
Mid-Market(51-1000 emp.)
Enterprise(> 1000 emp.)
Small-Business
(50 or fewer emp.)
Mid-Market
(51-1000 emp.)
Enterprise
(> 1000 emp.)
Reviewers' Industry
Computer Software
15.0%
Financial Services
13.5%
Information Technology and Services
9.1%
Marketing and Advertising
7.9%
Health, Wellness and Fitness
4.8%
Other
49.7%
Information Technology and Services
18.2%
Computer Software
16.3%
Internet
12.1%
Marketing and Advertising
9.1%
Education Management
2.0%
Other
42.3%
Alternatives
Discussions
What is Customer.io used for?
2 Comments
HV
Customer.io is a tool that helps businesses send personalized messages like emails, texts, and app notifications. It’s used to stay connected with customers,...Read more
What is the best way to make automations a smoother process?
1 Comment
RJ
Start small workflows. Make use of the content that your marketing and sales teams have. Use Goals. Know when to unenroll the contacts from the automation...Read more
What is Mailgun used for?
2 Comments
MF
MailGun is a paid application that integrates functionalities such as email in mobile and web apps. The integration is usually done using APIs.Read more
How to track emails?
1 Comment
TN
You can track user clickable emails by enabling them under domain settings. There's click tracking, open tracking, and unsubscribe tracking. Keep in mind...Read more
How is Mailgun priced?
1 Comment
TN
They have pay as you go and fixed pricing here: https://www.mailgun.com/pricing/Read more
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