flectar/mail
Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.
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Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.
High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
MailCraft: an open-source, clean-room mail, calendar and contacts program in pure Rust, for Microsoft 365, Outlook.com and IMAP. Early alpha.
短信转发器——监控Android手机短信、来电、APP通知，并根据指定规则转发到其他手机：钉钉群自定义机器人、钉钉企业内机器人、企业微信群机器人、飞书机器人、企业微信应用消息、邮箱、bark、webhook、Telegram机器人、Server酱、PushPlus、手机短信等。包括主动控制服务端与客户端，让你轻松远程发短信、查短信、查通话、查话簿、查电量等。（V3.0 新增）PS.这个APK主要是学习与自用，如有BUG请提ISSUE，同时欢迎大家提PR指正
mailcow: dockerized - 🐮 + 🐋 = 💕
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.
CLI to manage emails
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
The open-source email platform — self-host on your own AWS SES, or use the cloud. Resend-compatible API.
Self-hosted multi-account email client with support for JMAP/IMAP/SMTP, direct integration with Gmail and Outlook APIs. Also Contacts and Calendar. Built with Go, templ, and HTMX, SQLite for storage
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
Hylki (formerly Vireo): a fast, GNOME-native email client built with Rust and libadwaita.
a mailer library for Rust
The classic email sending library for PHP
💌 Mail app for Nextcloud
Insular email distribution - mail server as Docker images
Chatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧
The first Open-Source high-performance MTA developed from the ground-up for high-volume email sending environments.
Decentralized private messenger with chat-shared tools and games for Desktop
A self-hosted Email Middleware for IMAP, SMTP, Gmail API, Graph API — built for developers
An OOB interaction gathering server and client library
Official master for the Greenmail project
Self-hosted mail server for your own domain: SMTP/IMAP/POP3, CardDAV/CalDAV, React webmail and admin console, one-command Docker Compose.
A cross-platform .NET library for IMAP, POP3, and SMTP.
A fast, highly extensible, and event driven SMTP server
✉️ Composable all-in-one mail server.
Open-source transactional email API and self-hostable Resend alternative. SMTP, inbound mail, webhooks, and campaigns for developers.
Android app that forwards SMS messages to SMTP (Email) 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.
End-to-end encrypted email for the mesh networking age
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