Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. PilotMail – HTML Email Builder and HTML Email Test Tool launched in 2019; newer entries below may have overtaken it.

1. 1
   PilotMail▲4

   One place to Build and Test HTML Emails.

   2019 · its alternatives →

2. 2
   PilotMailer▲7

   Simple way to test your HTML Email before sending them

   2018 · pilotmailer.com · its alternatives →

3. 3
   Helo▲103

   An independent email API from former Postmark folks

   22d ago · helohq.com · its alternatives →

4. 4
   OpenSource Email Template▲109

   Responsive, Free, and Community Driven

   2014 · dyspatch.io · its alternatives →

5. 5
   Mail Pilot▲103

   Beautiful task oriented email client for Mac, iPhone, & iPad

   2015 · mindsense.co · its alternatives →

6. 6
   MailTester.AI▲327

   Forward an email and get an AI deliverability report in 30s

   2025 · mailtester.ai · its alternatives →

7. 7FM
   Flute – my attempt at a better email API▲40

   2018 · flutemail.com · its alternatives →

8. 8
   MailMentor▲162

   A data driven approach to writing better email

   2015 · mailmentor.io · its alternatives →

9. 9
   Xem▲69

   Open-source email marketing with managed SMTP

   Sep 2026 · xem.email · its alternatives →

10. 10
    Maildun for Mac▲92

    Design on-brand emails by hand, with AI, or over MCP

    13d ago · maildun.com · its alternatives →

11. 11
    TextCraft AI▲181

    Smart inbox, smart emails - AI at your service

    2023 · chromewebstore.google.com · its alternatives →

12. 12MA
    Milliner - A web app to quickly visually create responsive HTML emails▲6

    2019 · milliner.app · its alternatives →

13. 13
    Outline Mail▲80

    Making HTML email ridiculously easy

    2016 · its alternatives →

14. 14
    Seer▲98

    Making emails actionable.

    2014 · getseer.com · its alternatives →

15. 15
    MailPile▲75

    A fast, responsive open source email client

    2014 · mailpile.is · its alternatives →

16. 16
    Mailmalade▲120

    Build compatible HTML emails without coding knowledge

    2014 · its alternatives →

17. 17
    Switchboard▲99

    Open-source email processing built in Erlang

    2014 · its alternatives →

18. 18
    A Grunt workflow for designing and testing HTML emails▲66

    A Grunt workflow for designing and testing responsive HTML email templates with SCSS. - leemunroe/grunt-email-workflow

    2014 · github.com · its alternatives →

19. 19
    Turing Email▲112

    Making checking your inbox as fun as using Slack

    2015 · goo.gl · its alternatives →

20. 20
    Mailcloud▲110

    A New Way to Email

    2014 · mailcloudapp.com · its alternatives →

21. 21
    Monitor and Implement DMARC▲86

    A free tool to increase your email's deliverability

    2015 · dmarc.postmarkapp.com · its alternatives →

22. 22IF
    I found this useful tool for creating HTML Emails for free▲8

    2023 · htmlemailbuilder.xyz · its alternatives →

23. 23OS
    Open-source collection of email tips and workflows▲7

    2020 · inboxze.ro · its alternatives →

24. 24
    FutureMail▲52

    Email on your domain, built for people and their AI agents

    14d ago · futuremail.dev · 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 →