Core alternatives for AI agents.

✉️ Composable all-in-one mail server.

✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat

:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.

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.

Bichon – A lightweight, high-performance Rust email archiver with WebUI

An IMAP/POP/SMTP proxy that transparently adds OAuth 2.0 authentication for email clients that don't support this method. Keep legacy email clients working with Exchange Online, Gmail and other providers.

The classic email sending library for PHP

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

A Cloudflare-based email service | 基于 Cloudflare 的邮箱服务 | Cloudflare Email 邮箱 Mail

terminal mail client, mirror of https://git.meli-email.org/meli/meli.git https://crates.io/crates/meli

A cross-platform .NET library for IMAP, POP3, and SMTP.

Insular email distribution - mail server as Docker images

CLI to manage emails

Send email in Python conveniently for gmail using yagmail

a mailer library for Rust

Decentralized private messenger with chat-shared tools and games for Desktop