flectar / mail
Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.
flectar / mail
stalwartlabs / stalwart
All-in-one Mail & Collaboration server. Secure, scalable and fluent in every protocol (IMAP, JMAP, SMTP, CalDAV, CardDAV, WebDAV).
karatektus / pl_mail
Self-hosted, Gmail-style mail client. Multi-account IMAP, threaded conversations, real-time push via IMAP IDLE + Mercure. Built with Symfony, FrankenPHP, Hotwire Turbo. Clone and docker compose up.
mailcow / mailcow-dockerized
mailcow: dockerized - 🐮 + 🐋 = 💕
UCS-Care-Group / mailcraft
MailCraft: an open-source, clean-room mail, calendar and contacts program in pure Rust, for Microsoft 365, Outlook.com and IMAP. Early alpha.
curl / curl
A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, MQTTS, POP3, POP3S, RTSP, SCP, SFTP, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
docker-mailserver / docker-mailserver
Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.
pimalaya / himalaya
CLI to manage emails
dreamhunter2333 / cloudflare_temp_email
CloudFlare free temp domain email 免费收发 临时域名邮箱 支持附件 IMAP SMTP TelegramBot
Mailu / Mailu
Insular email distribution - mail server as Docker images
roundcube / roundcubemail
The Roundcube Webmail suite
c9dev / penguin-mail
Mail and calendar for Linux and macOS. Gmail and IMAP accounts, Google Calendar, contacts, OpenPGP and S/MIME. GTK4 and libadwaita, written in Rust.
rustmailer / bichon
Bichon – A lightweight, high-performance Rust email archiver with WebUI
urzeye / ophel
Turn AI conversations into organized, reusable workflows — across major AI platforms. | 把 AI 对话转化为可组织、可复用的工作流，适用于主流 AI 平台
s1t5 / mail-archiver
Mail-Archiver is a web application for archiving, searching, and exporting emails from multiple accounts. Featuring folder sync, attachment support, mailbox migration and a dashboard.
cvg / limap
A toolbox for 3D visual mapping, localization, and SfM with structured geometric features (points, lines, planes, vanishing points, wireframes, etc.).
gavindi / lookout
Lookout is a native GNOME mail client written in Rust on GTK 4 — mail, calendar, contacts and tasks in one window, laid out the way you already know. Accounts come from GNOME Online Accounts, or add your own IMAP/SMTP server directly.
dengyie / one-mail
Unified inbox: aggregate QQ/163/Gmail/Outlook mail via VPS aggregator into one Cloudflare Worker API — 统一收件箱系统
Foundry376 / Mailspring
:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
Anil-matcha / open-agent-email
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.
kurrier-org / kurrier
Kurrier is a modern, self-hosted workspace for email, calendar, contacts and storage.
foxcpp / maddy
✉️ Composable all-in-one mail server.
cypht-org / cypht
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
bkaankose / Wino-Mail
Built-in Mail & Calendars app clone for Windows.
simonrob / email-oauth2-proxy
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.
trafficflowhq / ohmail
Consent-first email on your existing IMAP mailboxes. Optional AI assistet screener with local or Cloud models. Full local Clients for MacOS, Windows, Linux + Arch and Omarchy integrationst. Android + iOS (coming soon) Apps. AGPL-3.0.
dovecot / core
Dovecot mail server
Mindbaz / awesome-opensource-email
Awesome Opensource Email Resources
hkdb / aerion
An Open Source Lightweight E-Mail Client
DirectoryTree / ImapEngine
Manage mailboxes using IMAP without the PHP extension
EthanYoQ / Invoice-Downloader
电子发票整理与报销准备工具：从邮箱批量收集 PDF/OFD/XML 发票，OCR 识别、分类归档并生成 Excel 汇总；提供 Windows/macOS 桌面版与 DSH 插件。
redisson / redisson
Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..
imapsync / imapsync
Imapsync is an IMAP transfers tool. The purpose of imapsync is to migrate IMAP accounts or to backup IMAP accounts. IMAP is one of the three current standard protocols to access mailboxes, the two others are POP3 and HTTP with webmails, webmails are often tied to an IMAP server. Upstream website is
neomutt / neomutt
✉️ Teaching an Old Dog New Tricks -- IRC: #neomutt on irc.libera.chat
MailCore / mailcore2
MailCore 2 provide a simple and asynchronous API to work with e-mail protocols IMAP, POP and SMTP. The API has been redesigned from ground up.
zone-eu / wildduck
Opinionated email server
forwardemail / forwardemail.net
Privacy-focused encrypted email for everyone. All-in-one alternative to Gmail + Mailchimp + Sendgrid.
jab / bidict
The bidirectional mapping library for Python.
ovh / venom
🐍 Manage and run your integration tests with efficiency - Venom run executors (script, HTTP Request, web, imap, etc... ) and assertions
apache / james-project
Emails at the heart of your business logic!
nextcloud / mail
💌 Mail app for Nextcloud
meli / meli
terminal mail client, mirror of https://git.meli-email.org/meli/meli.git https://crates.io/crates/meli
ikvk / imap_tools
Work with email by IMAP
shivammathur / homebrew-extensions
Homebrew tap for PHP extensions :beers:
mguessan / davmail
DavMail POP/IMAP/SMTP/CalDAV/CardDAV/LDAP Exchange and Office 365 Gateway - Synced with main subversion repository at
postalsys / imapflow
IMAP Client library for EmailEngine Email API (https://emailengine.app)
huacnlee / omamail
Omarchy mail plugin with Gmail, HEY and IMAP supports.
mailez-hq / mailez
Self-hosted mail server for your own domain: SMTP/IMAP/POP3, CardDAV/CalDAV, React webmail and admin console, one-command Docker Compose.
SunkenInTime / diorama
Diorama: a Minecraft minimap and world map drawn at an angle, like a model on a table. Fabric, client-side.
MasterAlanLab / emailbox
批量邮箱托管与统一收件箱，支持 outlook、qq、163 等主流邮箱 | Bulk email account manager over Graph / IMAP
emersion / go-imap
📥 An IMAP library for Go clients and servers
Alinto / sogo
SOGo is a very fast and scalable modern collaboration suite (groupware). It offers calendaring, address book management, and a full-featured Webmail client along with resource sharing and permission handling. It also makes use of documented standards (IMAP, CalDAV, CardDAV, etc.) and thereby provides native connectivity (without plugins) to many clients such as Microsoft Outlook, Apple iCal, the iPhone, Mozilla Lightning, and a plethora of mobile devices.
deltachat / deltachat-desktop
Decentralized private messenger with chat-shared tools and games for Desktop
chatmail / core
Chatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧
AvdLee / RocketSimApp
RocketSim — 30+ tools for Xcode's iOS Simulator. Testing, debugging, network monitoring, captures, accessibility, app actions, and AI agent automation via the RocketSim CLI. Used by 80k+ developers.
gsi-cyberjapan / gsimaps
The source of GSI Maps (https://maps.gsi.go.jp/)
shenxn / protonmail-bridge-docker
ProtonMail IMAP/SMTP Bridge Docker container
cyrusimap / cyrus-imapd
Cyrus IMAP is an email, contacts and calendar server
mjs / imapclient
An easy-to-use, Pythonic and complete IMAP client library
ProtonMail / gluon
An IMAP server library written in Go