Dev tools · alternatives · 2026
24 alternatives to MailtoUI.js
Enhance your mailto links with a convenient user interface.
MailtoUI.js is an open source JavaScript library that enhances mailto links with a user interface. It allows users to compose emails either through a browser-based email client or their default local email application.… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. MailtoUI.js launched in 2019; newer entries below may have overtaken it.
- 1
Gmail JavaScript API. Contribute to KartikTalwar/gmail.js development by creating an account on GitHub.
2013 · github.com · its alternatives →
- 2
I hate mailto▲399Stop websites from opening your email client.
2019 · ihatemailto.com · its alternatives →
- 3
- 4
MailMood▲282From casual email to corporate speak — in one click
2025 · chromewebstore.google.com · its alternatives →
- 5
Resend▲1,325An entire collection of pre-built components with a much faster development experience.
2023 · resend.com · its alternatives →
- 6
Squaresend is an intuitive, delightful alternative to mailto links. Just copy & paste one line of JavaScript into your site.
2013 · squaresend.com · its alternatives →
- 7
The InboxSDK is high level Javascript library used to easily build browser extensions that interact with Gmail
2015 · inboxsdk.com · its alternatives →
- 8
Generate mailto - links as per the email, subject & body
2023 · tools.deepakness.com · its alternatives →
- 9
Mailshake▲603A simple and easy to use solution for cold emails
2017 · mailshake.com · its alternatives →
- 10
Kombai for Email▲428Email designs to code that works even on Outlook, in a click
2023 · figma.com · its alternatives →
- 11
Create responsive HTML emails that work on any device
2016 · get.foundation · its alternatives →
- 12
Application for designing beautiful responsive emails that work everywhere.
2021 · mailstudio.app · its alternatives →
- 13OS
Hi HN! We’re Aleem, Chris, Borys, Meichen and Zach from Streak (YC S11) and today we’re open sourcing our InboxSDK https://www.inboxsdk.com, which makes it easy to build apps for Gmail. Over 1.8B users spend their days in Gmail! Having your app built into the Gmail workflow is a better user experience and gives you great user retention. InboxSDK gives you a high-level, declarative API to insert your UI into Gmail without having to directly manipulate the DOM yourself. End users install a browser extension to use your app. The SDK can add UI to multiple areas of Gmail. For example,…
2022 · its alternatives →
- 14
- 15
APIs to send automated interactive emails with forms
2021 · mailmodo.com · its alternatives →
- 16ML
2021 · mailto.id · its alternatives →
- 17
Hey HN, Chandler from Dittofeed (https://github.com/dittofeed/dittofeed). We just added low-code functionality to our open-source email template editor. The editor features a Notion-inspired “/” command interface for inserting new blocks. You still have the option of using MJML or HTML, but we wanted to give everyone an easier option for creating primarily text-based emails. We have a live demo of the editor which you can access here (just hit the “Create Template” button): https://demo.dittofeed.com/dashboard/templates Since this is the first…
2024 · github.com · its alternatives →
- 18
Ovy▲268One click AI-generated email replies for Gmail
2022 · chromewebstore.google.com · its alternatives →
- 19
- 20
💌 Build and send emails using React. Contribute to resend/react-email development by creating an account on GitHub.
Apr 2026 · react.email · its alternatives →
- 21
- 22
- 23
- 24
Danfo.js▲109Open Source JavaScript library for manipulating data.
2020 · github.com · its alternatives →
Also compare
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 →