Life & fun · alternatives · 2026

24 alternatives to Customer.io

Send email based on what your customers are actually doing

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Customer.io launched in 2014; newer entries below may have overtaken it.

1. 1
   Customer.io▲358

   Send email based on what people do (or don't do) in your app

   2014 · customer.io · its alternatives →

2. 2
   Customer.io Actions▲206

   Send messages across any channel - from push to postcards

   2016 · docs.customer.io · its alternatives →

3. 3
   Customer.io Summer Release▲142

   New ways to reach customers in the moments that matter

   Jul 2026 · customer.io · its alternatives →

4. 4
   Autosend▲102

   Send Email, SMS, & Push, based on what users do in your app

   2014 · its alternatives →

5. 5
   Mailchimp▲31

   Send better emails to your customers

   2013 · mailchimp.com · its alternatives →

6. 6
   Knowtify▲199

   Send smart, automated digest emails.

   2014 · its alternatives →

7. 7
   SendOut▲224

   Affordable email marketing for bloggers and influencers

   2017 · sendout.io · its alternatives →

8. 8
   Contact Form▲126

   Make it easy to talk to your customers

   2014 · bdow.com · its alternatives →

9. 9
   Iterable▲94

   Smarter email marketing

   2014 · iterable.com · its alternatives →

10. 10
    Customer.io Slack Action▲87

    Send notifications into Slack, based on user activity

    2016 · customer.io · its alternatives →

11. 11
    TextMe.io▲101

    Send customers a SMS w/ tap-friendly business contact info

    2015 · its alternatives →

12. 12
    Respondly▲132

    Team Inbox for Email & Twitter

    2014 · its alternatives →

13. 13
    Mailcloud▲110

    A New Way to Email

    2014 · mailcloudapp.com · its alternatives →

14. 14
    Dispatch▲73

    Email parsing for sales leads

    2014 · getdispatch.com · its alternatives →

15. 15
    Mailtrap.io▲125

    Fake SMTP. Send Test Emails without spamming real customers

    2014 · mailtrap.io · its alternatives →

16. 16
    SendOut (for Medium)▲188

    Email automation for Medium writers and publications

    2017 · sendout.io · its alternatives →

17. 17
    EmailJS▲37

    Send emails directly with Javascript

    2015 · emailjs.com · its alternatives →

18. 18
    mlist 2.0▲116

    Email newsletters, outside of the inbox

    2015 · letterlist.com · its alternatives →

19. 19
    Chat.cc▲137

    Turn your email conversations into a real-time chat

    2014 · chat.cc · its alternatives →

20. 20
    Mailchimp Automation▲162

    Marketing automation for everyone.

    2014 · mailchimp.com · its alternatives →

21. 21
    CommunicateBetter.io▲158

    Improve how your company communicates, every week.

    2015 · acuity.sa.com · its alternatives →

22. 22
    Dispatch▲106

    Action-based email for iOS

    2014 · candu123rege.com · its alternatives →

23. 23
    SendPulse▲217

    Increase newsletter open rate with artificial intelligence.

    2016 · sendpulse.com · its alternatives →

24. 24
    Email Insights▲154

    See and track your competitors' email

    2014 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →