Dev tools · alternatives · 2026

24 alternatives to Maildown – Super Simple Email API

A super simple CLI for sending emails. Contribute to chris104957/maildown development by creating an account on GitHub.

Maildown is an email API designed for developers who want a straightforward way to send emails programmatically. It simplifies the process of integrating email functionality into applications by providing a… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Maildown – Super Simple Email API launched in 2019; newer entries below may have overtaken it.

1. 1MS
   Maildown – super simple email API▲40

   2020 · maildown.dev · its alternatives →

2. 2MM
   Maildown – Markdown email campaigns▲92

   Hi, The beta program of my new startup, Maildown, is now complete and is now accepting paying customers: https://www.maildown.app As well as a lot of stability enhancements, we've added a new help system, a new CLI (https://github.com/chris104957/mailer-cli) and a REST API. Maildown lets you create transactional and marketing email campaigns using Markdown syntax, so you can generate and send your email content far more quickly than with traditional WYSIWYG editors. Thanks for looking, Chris

   2019 · its alternatives →

3. 3
   Simple Email API▲15

   2021 · batsign.me · its alternatives →

4. 4OS
   Open sourcing my email sending startup▲38

   Hi all, I've posted a few times here about Maildown, a startup that I've been trying to validate lately. Due to lack of time to focus on this, I've taken the decision to abandon the project as a startup, but to make it available as an open source solution instead. The (still very basic) github repository is here: https://github.com/chris104957/maildown Maildown now exists as a simple CLI wrapper for Amazon SES which bakes in Markdown and styling support, making it much easier to get transactional mails up and running in any project Thanks for looking, Chris

   2019 · its alternatives →

5. 5
   Buttondown▲208

   The easiest way to send simple newsletters

   2017 · buttondown.com · its alternatives →

6. 6
   Resend▲1,325

   An entire collection of pre-built components with a much faster development experience.

   2023 · resend.com · its alternatives →

7. 7
   email - Send emails easily in Go▲69

   Robust and flexible email library for Go. Contribute to jordan-wright/email development by creating an account on GitHub.

   2014 · github.com · its alternatives →

8. 8
   Mailshake▲603

   A simple and easy to use solution for cold emails

   2017 · mailshake.com · its alternatives →

9. 9
   A self-hosted email engine▲149

   Everything you need to start sending newsletters, drip campaigns, transactional emails. Mailcoach is a fully featured email marketing platform built for growing creators, developers, and businesses.

   2020 · mailcoach.app · its alternatives →

10. 10WM
    We made a CLI and API to automate inbound email▲16

    Hi HN! We're a 5 person team working on simplifying the creation of email apps. Right now, most email services focus on outbound emails (newsletters, transactional, delivery), but that doesn't solve the fact that we all hate receiving them. You can try it at https://mailscript.com Mailscript lets you create programmable email addresses. It works headless, via the CLI, API (we use Swagger to support most languages). You can even run it as a daemon on a server (to run functions when emails arrive). Once you get [email protected], you can create as many aliases as you'd like…

    2021 · its alternatives →

11. 11IB
    I built Mailhub – A scalable API for sending emails with ease not tears▲104

    2024 · mailhub.sh · its alternatives →

12. 12
    Mailbrew▲396

    Automated email digests from Twitter, Reddit, YouTube & more

    2020 · mailbrew.com · its alternatives →

13. 13
    Email.md – Markdown to responsive, email-safe HTML▲380

    Turn markdown into responsive, email-safe HTML that renders perfectly across every client.

    Mar 2026 · emailmd.dev · its alternatives →

14. 14
    Gmail.js – JavaScript API for Gmail▲212

    Gmail JavaScript API. Contribute to KartikTalwar/gmail.js development by creating an account on GitHub.

    2013 · github.com · its alternatives →

15. 15
    Base API▲277

    API for authentication, email sending, images and more!

    2019 · base-api.io · its alternatives →

16. 16
    newsletter-cli▲80

    CLI tool to write and send newsletters in Markdown

    2019 · github.com · its alternatives →

17. 17
    Unosend▲205

    Send transactional + marketing email w/ 99.9% deliverability

    Dec 2025 · unosend.co · its alternatives →

18. 18
    MailSlurp▲103

    End-to-end email testing made easy

    2018 · mailslurp.com · its alternatives →

19. 19
    new.email by Resend▲258

    Build cross-platform emails using natural language.

    2025 · resend.com · its alternatives →

20. 20
    EasyEmail▲227

    Gmail plug-in that helps you write emails quickly

    2018 · easyemail.ai · its alternatives →

21. 21
    Mailercloud Email API Platform▲165

    1,000+ Emails per Second with 99%+ Deliverability

    Mar 2026 · mailercloud.com · its alternatives →

22. 22
    Gmail CLI Utils (bulk delete mail by query, get/create filters)▲192

    it will contain different utilities for GMail API over OAuth2 - abhishekkr/gmail-helper

    2020 · github.com · its alternatives →

23. 23
    Go Mail▲72

    A cross platform mail driver for GoLang

    2021 · github.com · its alternatives →

24. 24
    EmailEngine▲165

    Access any email account to receive/send emails with an API

    2021 · emailengine.app · 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 →