A Cloudflare-based email service.
A simple, responsive email service designed to run on Cloudflare Workers 🎉. With only one domain, you can create multiple different email addresses, similar to major email platforms. This project can be deployed on Cloudflare Workers to reduce server costs and build your own email service.
Turn mailboxes into issue boards.
Multi-tenant application that syncs project mailboxes (IMAP/SMTP) with issue trackers. Supported providers: GitLab (cloud + self-hosted) and GitHub (cloud + Enterprise Server).
Subscribe once. Read by email or over MCP.
Antenna stores your feed subscriptions in one local SQLite index, then routes new posts to email and to AI agents over MCP from the same data. No vendor cloud. No proprietary lock-in. Your subscription graph lives in a file you control.
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Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container.
docker-mailserver, or DMS for short, is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Anti-spam, Anti-virus, etc.). It employs only configuration files, no SQL database. The image is focused around the slogan "Keep it simple and versioned".
A robust email server.
A resilient & standards-compliant open-source IMAP server with built-in encryption
🕵️♂️ (2-in-1) Email & Username OSINT suite. Analyzes 205+ scan vectors (100+ email / 105+ username) for security research, investigations, and digital footprinting.
The ultimate tool for finding a unique username across GitHub, X, Reddit, Instagram, and more in a single command.
a TUI email client.
A beautiful and functional email client for your terminal, built with Go and the charming Bubble Tea TUI library. Never leave your command line to check your inbox or send an email again!
Authenticated Email for AI Agents. Give your agent an email address. In under two minutes.
Anyone can send an email, so your agent should have one. No mail server. No public URL. Free.
Authenticated email gateway for AI agents — SPF/DKIM verified inbound, HMAC-signed delivery, webhook + WebSocket fan-out, CLI + SDKs
Get to inbox zero faster. Stop managing email. Let your inbox manage itself.
NeatMail organizes priority emails and drafts replies in Gmail and Outlook, so you can clear your inbox in less time.
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Sup is a console-based email client for people with a lot of email. A curses threads-with-tags style email client.
It presents an interface of a list of threads, which are each hierarchical collections email messages. Threads can have multiple tags applied to them. It supports a very fast full-text search, automatic contact-list management, custom code insertion via a Ruby hook system, and more. If you’re the type of person who treats email as an extension of your long-term memory, Sup is for you.
Modern Webmail Client for Stalwart Mail Server.
Webmail built for the 21st Century. A modern, self-hosted email client for Stalwart Mail Server powered by the JMAP protocol. Email, calendar, contacts and files. Fast, private, and open source.
Render markdown into email-safe HTML. Responsive Emails, Written in Markdown. Write markdown. Ship emails. No HTMHELL.
Email.md converts markdown into responsive, email-safe HTML that works across Gmail, Outlook, Apple Mail, Yahoo, and every other client.
Transparently add OAuth 2.0 support to IMAP/POP/SMTP client applications, scripts or any other email use-cases that don't support this authentication method.
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.
Open-Source PIM Tools in Rust.
Pimalaya is an ambitious project that aims to improve open-source tools related to Personal Information Management (also known as PIM), which includes emails, contacts, calendars, tasks and more.
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Simple and modern email sending library
Universal interface for emailing across runtimes.
Upyo is a simple and cross-runtime library for sending email messages using SMTP and various email providers. It works on Node.js, Deno, Bun, and edge functions.
Archive a lifetime of email and chat. Offline search, analytics, and AI query over your full message history. Powered by DuckDB.
Your messages are yours. Decades of correspondence, attachments, and history shouldn't be locked behind a web interface or an API. msgvault downloads a complete local copy and then everything runs offline. Search, analytics, and the MCP server all work against local data with no network access required.
Currently supports Gmail, with WhatsApp and other messaging platforms planned.
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💌 A beautiful, fast and fully open source mail client for Mac, Windows and Linux.
Boost your productivity and send better email with Mailspring, the best mail client for Mac, Linux, and Windows.
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✉️ Open-Source Email API for Developers. Self-hosted Alternative to SES, Mailgun, SendGrid.
Hyvor Relay is a self-hosted, open-source email API for developers. It uses SMTP to send emails using your own infrastructure. It is designed to be simple to self-host, easy to manage and observe, and powerful enough to send millions of daily emails.
Free Open-Source Alternative to Mailchimp & Resend.
Notifuse is a modern, self-hosted emailing platform that allows you to send newsletters and transactional emails at a fraction of the cost.
A lightweight, high-performance Rust email archiver with WebUI.
Bichon is a minimal, high-performance, standalone Rust email archiver with a built-in WebUI. Its name is inspired by the puppy my daughter adopted last month. It runs as a single binary, requires no external dependencies, and provides fast, efficient email archiving, management, and search.
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Eonvelope is an open-source self-hostable email archive built with the django framework.
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A comprehensive solution for archiving, searching, and exporting emails.
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.
Postfix Greylisting Policy Server
Postgrey is a Postfix policy server implementing greylisting developed by David Schweikert.
When a request for delivery of a mail is received by Postfix via SMTP, the triplet CLIENT_IP / SENDER / RECIPIENT is built. If it is the first time that this triplet is seen, or if the triplet was first seen, less than 5 minutes ago, then the mail gets rejected with a temporary error. Hopefully spammers or viruses will not try again later, as it is however required per RFC.
Receive and send emails anonymously. Open source anonymous email service.
With email aliases, you can be anonymous online and protect your inbox against spams and phishing. Open source. Based in Switzerland.
📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
Postal is a complete and fully featured mail delivery platform for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready for you to run on your own servers.
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Repository of Yara rules dedicated to Phishing Kits Zip files.
This repository, dedicated to Phishing Kits zip files YARA rules, is based on zip raw format analysis to find directories and files names, you don't need yara-extend there.
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phishing, scam and brand impersonation detection – StalkPhish – We provide B2B tools, data and knowledge for a better phishing and brand impersonation detection.
StalkPhish-OSS is a tool created for searching into free OSINT databases for specific phishing kits URL. StalkPhish-OSS was made for phishing pages detection. More, StalkPhish-OSS is designed to try finding phishing kits sources.
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Timely. Accurate. Relevant Phishing Intelligence.
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Serveur mail et hébergement e-mail professionnel avec antispam.
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Everyone knows what an email address is, right?
Decide if each email address is valid or not. I used the email-addresses library to verify against the relevant RFCs. Enjoy.
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OAuth credential MAnager.
Many IMAP/SMTP clients, like msmtp, fdm, isync, aerc, neomutt or mutt can use OAuth2 access tokens but lack the ability to renew and/or authorize OAuth2 credentials. The purpose of oama is to provide these missing capabilities by acting as a kind of smart password manager. In particular, access token renewal happens automatically in the background transparent to the user.
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Alpine is a free software email client developed at the University of Washington. Alpine is a rewrite of the Pine Message System that adds support for Unicode and other features. Alpine is meant to be suitable for both inexperienced email users and the most demanding of power users. Alpine can be learned by exploration and the use of context-sensitive help. The user interface can be customized.
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Secure, Open-source Email Archiving for Data Sovereignty. Your Secure, Sovereign Email Archive.
Open Archiver is a self-hosted, open-source platform for archiving, searching, and managing your emails. Take control of your digital communication history, free from vendor lock-in.
An Open-Source MailServer, NewsLetter, Email Marketing Solution.
BillionMail gives you open-source MailServer, email marketing — fully self-hosted, dev-friendly, and free from monthly fees.
Email Validation API. Block Fake Users. Stop Disposable Emails from Creating Spam Accounts.
UserCheck identifies and blocks fake email addresses. So you can focus on real users.
AI Powered Email, Built to Save You Time Zero is an AI-native email client that manages your inbox, so you don't have to.
Zero is an open-source AI email solution that gives users the power to self-host their own email app while also integrating external services like Gmail and other email providers. Our goal is to modernize and improve emails through AI agents to truly modernize emails.
tail -f your gmail.
A command-line tool to monitor Gmail messages and output them as JSON, designed for automation, monitoring, and integration with other tools.
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Index your Gmail account to a SQLite DB and play with the data.
This is a script to download emails from Gmail and store them in a SQLite database for further analysis. I find it extremely useful to have all my emails in a database to run queries on them. For example, I can find out how many emails I received per sender, which emails take the most space, and which emails from which sender I never read.
Open-source editor for crafting emails.
Maily is a free and open-source editor that makes it hassle-free to craft beautiful emails . It comes with a set of pre-built components and opinionated design that you can use to build your emails.
Free Email Forwarding. Custom Domain Emails.
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The free and open source email and collaboration software .
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Dovel is a SMTP server that sends and receives emails acording to a simple configuration file. It also comes with an optional web interface that you can use to browse your emails. It is designed to be simple and easy to use, and will remain so. Dovel is great because:
disposable email server with an easy setup.
Whenever you sign up with your email on a website, your email address is stored and sometimes sold to advertisers. This is where you get your bulk of spam emails. Whenever a data breach happens, you also risk having your primary email address leaked and informations stolen.
Using Nortix Mail, you can create disposable email addresses that can be used to sign up to website that requires email verification. This is very useful when you just want to try out new website / services without giving away your real email address. It significantly enhances privacy, security and reduces spam. It's like running your own Gmail server.
All your E-mail, from all your accounts, in one place
Cypht (pronounced "sift") is like a news reader, but for E-mail. Cypht does not replace your existing accounts - it combines them into one. And it's also a news reader.
Cypht: Lightweight Open Source webmail aggregator [PHP, JS]. Supports IMAP/SMTP, JMAP and EWS (Exchange Web Services)
PhishTool gives human analysts the power to reverse engineer phishing emails, to better defend against them. PhishTool is to phishing emails as a disassembler is to malware or a forensic toolkit is to file systems.
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An open-source incident management tool supporting multi-channel alerting, customizable messages, and on-call integrations.
modern, secure, all-in-one mail server.
For sending and receiving email. With support for IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-based junk filtering, Internationalization (IDNA), automatic TLS with ACME and Let's Encrypt, account autoconfiguration, webmail.
Plauna is a privacy focused service that helps you categorize your e-mails. All of its data is stored only on your computer.
You can parse your e-mails from mbox files or directly by connecting to your IMAP servers. Plauna helps you categorize your e-mails and automates the process so that incoming e-mails are moved to their respective folders on your IMAP server.
A completely free and open source email validation API that never stores your data. Built to support solopreneurs and the developer community.
A high-performance, cost-effective email validation service designed for indie hackers and small startups. The service validates email addresses in real-time, checking syntax, domain existence, MX records, and detecting disposable email providers. The main focus is on precision instead of recall, meaning instead of edge cases the focus is on having the biggest coverage.
AI you can trust
Easily summarize emails, docs, articles, and videos across the web — without sacrificing your privacy
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💌 Free, Open Source HTML Email Editor and Designer. Free, open source, HTML email template editor and no code designer.
Bring Back YouTube Email Notifications! YouTube upload email notification replacement
In August 2020, YouTube removed the feature of sending email notifications when a subscriber uploads a video. Many watchers, myself included, prefer email notifications to app notifications. This project aims to provide a replacement to YouTube's email notifications. Running this small program checks all your subscribers and sends emails with the links to new videos.
Email parser for browser and serverless environments.
postal-mime is an email parsing library that runs in browser environments (including Web Workers) and serverless functions (like Cloudflare Email Workers). It takes in a raw email message (RFC822 format) and outputs a structured object containing headers, recipients, attachments, and more.
Automate and clean your inbox. Clean Up Your Inbox In Minutes.
Bulk unsubscribe from newsletters, automate your emails with AI, block cold emails, and view your analytics. Open-source.
Is a Dockerized email campaign management application that allows users to create templates, manage contact lists, and send HTML-based emails via SMTP. It includes features to simplify email marketing campaigns and integrates seamlessly with a MySQL database for managing data.
GooBook allows to use Google Contacts from
the command-line and from MUAs such as mutt.
mutt-wizard is a tool that automatically sets up a NeoMutt-based minimal
email system.
It configures mutt and isync with a default interface and safe passwords.
muchsync synchronizes notmuch mail across machines.
muchsync brings notmuch to all of your computers by synchronizing your mail
messages and notmuch tags across machines.
The protocol uses pipelines to work efficiently over high-latency networks
such as mobile broadband.
getmail 6 is a flexible, extensible mail retrieval system with support for POP3, IMAP4, SSL variants of both, maildirs, mboxrd files, external MDAs, arbitrary message filtering, single-user and domain-mailboxes, and many other useful features.