Dev tools · alternatives · 2026

24 alternatives to js2mail

Send emails from JavaScript with a simple API in 2 minutes

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   EmailJS▲176

   Send email directly from Javascript. No server code needed.

   2019 · emailjs.com · its alternatives →

2. 2
   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 →

3. 3
   Mailercloud Email API Platform▲165

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

   Mar 2026 · mailercloud.com · its alternatives →

4. 4
   Send2M▲145

   Simple forms, instantly embed anywhere

   2023 · its alternatives →

5. 5
   Submit JSON▲127

   Easy form submissions and email notifications

   2023 · submitjson.com · its alternatives →

6. 6
   EmailJS▲37

   Send emails directly with Javascript

   2015 · emailjs.com · its alternatives →

7. 7
   MailtoUI.js▲357

   Enhance your mailto links with a convenient user interface.

   2019 · mailtoui.com · its alternatives →

8. 8
   InboxThis▲167

   Send any webpage to your inbox in 5 seconds

   2022 · chromewebstore.google.com · its alternatives →

9. 9
   Sidemail 2.0▲306

   Hi all! I'm Kristyna, maker of Sidemail. I'd love to share with you what we've been building. We built Sidemail because sending emails from a SaaS app was way harder than it should be. Sidemail is made for developers and teams that want one simple place to handle SaaS emails with reliable delivery and no bloat. It has: - Everything for creating, managing and delivering SaaS emails in one platform, - Easy-to-use email API for sending password resets, receipts, etc. - Messenger for writing product updates and newsletters, - Email automations for onboarding and lifecycle flows, - Fast email…

   Nov 2025 · sidemail.io · its alternatives →

10. 10
    Webhook(ed) Email▲79

    Get a a webhook that emails you in 30 seconds

    2023 · webhooked.email · its alternatives →

11. 11
    PostoHub▲73

    Create email campaign in 5 minutes with modern MJML Editor

    2020 · postohub.io · its alternatives →

12. 12
    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 →

13. 13
    Unosend▲205

    Send transactional + marketing email w/ 99.9% deliverability

    Dec 2025 · unosend.co · its alternatives →

14. 14
    Best Email Scripts▲196

    Email scripts that actually get replies 💌

    2018 · its alternatives →

15. 15
    publishthis.email▲120

    Create a web page in seconds, by sending an email.

    2017 · publishthis.email · its alternatives →

16. 16
    Codemail.io▲88

    Send emails with perfectly formatted code snippets

    2025 · codemail.io · its alternatives →

17. 17
    Thunder Mail▲87

    Cheap and simple transactional emails API with Amazon SES

    2018 · github.com · its alternatives →

18. 18WM
    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 →

19. 19
    Real-time email validation JS Widget▲30

    Verify an email address typed in your form in real-time

    2020 · app.thechecker.co · its alternatives →

20. 20OA
    One API for all your SMTPs▲9

    Hi HN, I host my own mail infrastructure and don't rely on third-party tools to send my mails. But in a microservice architecture, managing all the SMTP configs quickly becomes tiresome. After a while I'd always have my credentials and settings scattered in application-properties, bash scripts and environment files. So I've build Brieferl, an app where you can add your SMTP servers and send emails through a single API with a simple JSON payload. You also get logs of when/where emails were sent and HTML previews of messages. I am interested in what you guys think about this. You can…

    2025 · brieferl.com · its alternatives →

21. 21
    SMTP‑Test.com▲103

    One‑click SMTP server test with real‑time protocol logs

    2025 · smtp-test.com · its alternatives →

22. 22
    Simple Email API▲15

    2021 · batsign.me · its alternatives →

23. 23IB
    I built Mailhub – A scalable API for sending emails with ease not tears▲104

    2024 · mailhub.sh · its alternatives →

24. 24MS
    Maildown – super simple email API▲40

    2020 · maildown.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 →