Topic
Open-source startups tagged #mail
8 open-source startups in this directory carry the GitHub topic #mail. 6 pushed code in the last 30 days, 1 has been quiet for 31–120 days, 1 has not pushed in over 120 days or is 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 8 pushed in the last 30 days.
The list
All 8, 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 |
|---|---|---|---|---|
 docker-mailserverdocker-mailserver/docker-mailserverStill shipping | Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. | 19.4K | Still shipping | |
 MailspringFoundry376/MailspringStill shipping | :love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux. | 17.9K | Still shipping | |
 postalpostalserver/postalStill shipping | 📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail | 16.9K | 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 | |
 stalwartstalwartlabs/stalwartStill shipping | All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV). | 15K | 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 | |
 mailcow-dockerizedmailcow/mailcow-dockerizedStill shipping | mailcow: dockerized - 🐮 + 🐋 = 💕 | 13.6K | Still shipping |
Related collections
Sideways from here.
The 8 largest other topics in the directory, then the other ways to slice it.