Dev tools · alternatives · 2026

24 alternatives to Simple Email API

Simple Email API is a developer tool for sending emails programmatically. Launched in 2021, it provides a straightforward interface for integrating email functionality into applications. The service is designed for… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Simple Email API launched in 2021; newer entries below may have overtaken it.

1. 1
   Maildown – Super Simple Email API▲98

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

   2019 · github.com · its alternatives →

2. 2MS
   Maildown – super simple email API▲40

   2020 · maildown.dev · its alternatives →

3. 3
   Resend▲1,325

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

   2023 · resend.com · its alternatives →

4. 4IB
   I built Mailhub – A scalable API for sending emails with ease not tears▲104

   2024 · mailhub.sh · its alternatives →

5. 5
   Base API▲277

   API for authentication, email sending, images and more!

   2019 · base-api.io · its alternatives →

6. 6
   Unosend▲205

   Send transactional + marketing email w/ 99.9% deliverability

   Dec 2025 · unosend.co · its alternatives →

7. 7
   InboxSDK▲508

   First usable API to write Gmail Apps for 1B active users

   2015 · inboxsdk.com · its alternatives →

8. 8
   Mailshake▲603

   A simple and easy to use solution for cold emails

   2017 · mailshake.com · its alternatives →

9. 9
   Email Validator!▲193

   Free JSON API that gives you a simple way to validate emails

   2015 · garridodiaz.com · its alternatives →

10. 10
    Popcorn Notify▲301

    Send simple emails and text messages from one API

    2018 · popcornnotify.com · its alternatives →

11. 11
    EasyListing▲102

    Create, manage, and grow your email list

    2025 · its alternatives →

12. 12
    Mailmodo Email API▲244

    APIs to send automated interactive emails with forms

    2021 · mailmodo.com · its alternatives →

13. 13
    Sidemail▲494

    Quick & easy email for all your side projects

    2018 · sidemail.com · its alternatives →

14. 14
    Mailercloud Email API Platform▲165

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

    Mar 2026 · mailercloud.com · its alternatives →

15. 15BA
    Base – API for authentication, email sending, images and more▲140

    Simple API for authentication, email sending, image storage and more.

    2019 · base-api.io · its alternatives →

16. 16
    Shortwave AI Email Assistant 2.0▲214

    The ultimate search, analysis, and productivity companion

    2024 · shortwave.com · its alternatives →

17. 17
    Context.IO▲226

    API for email inboxes

    2015 · its alternatives →

18. 18
    Waypoint▲138

    Build and send data-rich emails, faster than ever

    2023 · usewaypoint.com · its alternatives →

19. 19
    Abstract APIs▲341

    Simple, powerful APIs for everyday dev tasks

    2020 · abstractapi.com · its alternatives →

20. 20
    Buttondown▲208

    The easiest way to send simple newsletters

    2017 · buttondown.com · its alternatives →

21. 21
    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 →

22. 22
    Waypoint▲103

    A refreshingly simple way to send data-rich emails

    2023 · usewaypoint.com · its alternatives →

23. 23VM
    Varmail.me – A tiny, free API for emailing yourself▲15

    2016 · varmail.me · its alternatives →

24. 24
    Email Templating API▲38

    Sendwithus helps teams manage transactional emails outside of source code — leading to streamlined workflows and always on-brand emails. Learn more here!

    2014 · sendwithus.com · 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 →