Topic
Open-source startups tagged #email
9 open-source startups in this directory carry the GitHub topic #email. 6 pushed code in the last 30 days, 1 has been quiet for 31–120 days, 2 have not pushed in over 120 days or are archived. Topics are set by each repository’s own maintainers, so this is what those projects chose to call themselves rather than a category we assigned.
Ship status
6 of 9 pushed in the last 30 days.
The list
All 9, most-starred first.
The last column is the most recent push to any branch, by a person or a bot — it is not a claim that anyone is maintaining the project, and a quiet repository may be a finished one.
| Project | What it does | Stars | Ship status | Last push |
|---|---|---|---|---|
 novunovuhq/novuStill shipping | The open-source communication infrastructure for agents and products | 40.1K | Still shipping | |
 nylas-mailnylas/nylas-mailGone silent | :love_letter: An extensible desktop mail app built on the modern web. Forks welcome! | 24.7K | Gone silent | |
 MailspringFoundry376/MailspringStill shipping | :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux. | 17.9K | Still shipping | |
 BillionMailaaPanel/BillionMailGone silent | BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr | 15.9K | Gone silent | |
 mailinaboxmail-in-a-box/mailinaboxStill shipping | Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box. | 15.4K | Still shipping | |
 logtologto-io/logtoStill shipping | 🧑🚀 Authentication and authorization infrastructure for SaaS and AI apps, built on OIDC and OAuth 2.1 with multi-tenancy, SSO, and RBAC. | 14.7K | Still shipping | |
 cloud-mailmaillab/cloud-mailSlowed | A Cloudflare-based email service | 基于 Cloudflare 的邮箱服务 | Cloudflare Email 邮箱 Mail | 14.6K | Slowed | |
 thunderbird-androidthunderbird/thunderbird-androidStill shipping | Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail) | 14.1K | Still shipping | |
 inbox-zeroelie222/inbox-zeroStill shipping | The world's best AI personal assistant for email. Open source app to help you reach inbox zero fast. | 12.4K | Still shipping |
Related collections
Sideways from here.
The 8 largest other topics in the directory, then the other ways to slice it.