sruf79 / halo-spaces

A calm, tidy design for Thunderbird on macOS – inspired by Apple Mail, with colourful spaces.

laramies / theHarvester

E-mails, subdomains and names Harvester - OSINT

hkdb / aerion

An Open Source Lightweight E-Mail Client

nodemailer / nodemailer

✉️ Send e-mails with Node.JS – easy as cake!

rememberber / WePush

专注批量推送的小而美的工具，目前支持：模板消息-公众号、模板消息-小程序、微信客服消息、微信企业号/企业微信消息、阿里云短信、阿里大于模板短信 、腾讯云短信、云片网短信、E-Mail、HTTP请求、钉钉、华为云短信、百度云短信、又拍云短信、七牛云短信

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.

eikek / docspell

Assist in organizing your piles of documents, resulting from scanners, e-mails and other sources with miminal effort.

postalserver / postal

📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail

eladnava / mailgen

A Node.js package that generates clean, responsive HTML e-mails for sending transactional mail.

cypht-org / cypht

Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)

nodemailer / mailparser

Decode mime formatted e-mails

chatmail / core

Chatmail Rust Core library, used by Android/iOS/desktop chatmail apps, bindings and bots 📧

jazzband / django-newsletter

An email newsletter application for the Django web application framework, including an extended admin interface, web (un)subscription, dynamic e-mail templates, an archive and HTML email support.

tbxark / mail2telegram

Receive email in Telegram: instant push notifications plus a Mini App inbox.

cyberdefenders / email-header-analyzer

E-Mail Header Analyzer

xhit / go-simple-mail

Golang package for send email. Support keep alive connection, TLS and SSL. Easy for bulk SMTP.

milkshakesoftware / PreMailer.Net

C# library that moves your stylesheets to inline style attributes, for maximum compatibility with E-mail clients.

Site-19 / The-Bat-Secure-Mail-Setup

The Bat Email Client for Windows 11 and 10 Secure Setup Guide 2026

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

SoerenKaiser99 / parcel_tracker

Paket Tracker für Home Assistant: DHL, DPD, GLS, Hermes, UPS sowie Amazon-, eBay- und AliExpress-Bestellungen aus E-Mails – mit eigener Dashboard-Karte, Kalender und Push

TideDra / zotero-arxiv-daily

Recommend new arxiv papers of your interest daily according to your Zotero libarary.