Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.
- mailserver
- postfix
- dovecot
Repository Index
73,862 visible repositories in the index
1–15 of 15 · Most stars
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
- ruby
- smtp
- postal
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
- email-marketing
- mailserver
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.
:mailbox: SMTP Server + Web Interface for viewing and testing emails during development.
modern full-featured open source secure mail server for low-maintenance self-hosted email
A fast, highly extensible, and event driven SMTP server
- smtp
- mta
- javascript
- spf
Mail hosting made simple
📫 A serverless email server on AWS using S3 and SES
Mini SMTP server written in golang
- go
- smtp-server
- server
- smtp
Script that installs/configures a Dovecot, Postfix, Spam Assassin, OpenDKIM Debian web server
Open-source email infrastructure for AI agents: secure inboxes, REST and MCP APIs, SMTP, human approval workflows, signed webhooks, and Python and TypeScript SDKs. Self-host with Docker and PostgreSQL.
- open-source
- ai-agents
- agent-email
- agentic-ai
Full-featured, open source mail server solution for mainstream Linux/BSD distributions.
Open-source, privacy-focused email service for custom domains. Free email forwarding, encrypted mailboxes (IMAP/POP3), SMTP sending, calendars and contacts (CalDAV/CardDAV), webhooks, and an email API. Self-host it with Docker. A private alternative to Gmail, Mailchimp, and SendGrid.
- caldav
- carddav
- custom-domain
The open-source Amazon SES replacement. Built in Rust.
- amazon-ses
- deliverability
- dkim