I'm working on an open-source Gmail replacement
I'm working on an open-source Gmail replacement launched on November 6, 2013 with 387 votes, #2 of 701 launches that month and more than 99% of that year's launches.
In plain words
This is an open-source project aimed at providing an alternative to Gmail. Built for developers and users seeking a self-hosted email solution, it has been in development since 2013. The project offers source code transparency and community contribution opportunities, making it suitable for those who want more control over their email infrastructure or prefer open-source software over proprietary services.
written from the facts on this page · September 2026
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- APA personal Gmail2012 · i.imgur.com · ▲127
Hey guys, so I've been building my own Gmail for the past few weeks and would like your feedback. Find a preview here: http://i.imgur.com/UDz2y.png (Mouse cursor is over the "REPLY" button, to show the hover-effect) The app you see in the screenshot is what I've been using in the past week and it starts to feel better than the gmail interface. Just a quick explanation: - It's conversation-based like Gmail. - Conversations with new emails are on the left. - Conversations may be labeled ... based on predefined filters or manually. - Every conversation stays in the left sidebar until marked…
- OSOpen-Sourcing InboxSDK (YC S11) – Build Apps in Gmail2022 · ▲257
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,…
Someday, Open-Source Calendly Alternative for Gmail / Google App Script2024 · github.com · ▲313Free and open-source. Simple alternative to cal.com / calendly, built on Google-App-Script for Gmail users. Built with modern technologies like React, TypeScript, Shadcn/UI, and Vite.

Open-source superhuman like email client2023 · github.com · ▲94Hey Hacker news, Over the last couple months, I've been hacking with a friend on an email client for gmail that is similar to superhuman. A little backstory, we think that superhuman, in it's current implementation is vim-like. We hope to mostly match the performance and usability there and expand it into something more vscode-like. Looking for feedback and suggestions!
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Source: Show HN post ↗
Launched alongside, November 2013
the whole month →- PG
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