







Maddy Mail Server implements all functionality required to run a e-mail server. It can send messages via SMTP (works as MTA), accept messages via SMTP (works as MX) and store messages while providing access to them via IMAP. In addition to that it implements auxiliary protocols that are mandatory to keep email reasonably secure (DKIM, SPF, DMARC, DANE, MTA-STS).
Delta Chat is a decentralized and secure messenger app | Hacker News
This is useful if you want to keep the content of your messages secure, but if you need to keep your identity, social graph and the fact that you conversed with certain people obfuscated, I don't think Delta Chat via email is a good solution.
better-email | sTeam Public
What i find interesting about this article is not the realization that MPI is like email, but the reverse, that human collaboration using messages is like MPI. The suggestion to use SMTP as a transport for things much more complex than emails is something worth looking at. It relates to my belief that the instant messaging difference does not come from the new protocols like XMPP for jabber, but from the new client interface that facilitates short messages in a conversational style. SMTP is equally (if not more) capable of transporting these messages. Sure, SMTP is not designed for "instant" messaging. but todays use of SMTP where my local SMTP server talks directly to your SMTP server, makes email is just as instant.
Delta Chat: Delta Chat, decentralized secure messenger
Delta Chat is a decentralized and secure messenger app 💬 Reliable instant messaging with multi-profile and multi-device support ⚡️ Sign up to secure fast chatmail servers or use classic e-mail serv...

Quiet - Private messaging. No servers.
Quiet is available for all major platforms. (And eventually the web, too!)

mattt/iMCP
A macOS app that provides an MCP server to your Messages, Contacts, Reminders and more
mattt/iMCP
A macOS app that provides an MCP server to your Messages, Contacts, Reminders and more
Email and calendar made better
Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

Email and calendar made better
Fast, private email hosting for you or your business. More productive, lightning fast, simple and built to save you time.

JSON Meta Application Protocol Specification (JMAP)
JMAP is the open protocol that replaces IMAP (and CardDAV and CalDAV). It’s faster, simpler, more powerful, and built for how email works today.

We’re Making Email More Modern With JMAP
The specifications for JMAP have been published by the Internet Engineering Task Force (IETF), marking a big victory for email tools now and in the future.

Self-hosting email the hard way from your own routable IPv4 block up
How we refreshed self-hosted Recoil email with our own RIPE-allocated IPv4 block, and deployed Postfix/rspamd/Dovecot to get full SPF/DKIM/DMARC deliverability.

Free Email Forwarding for Custom Domains - #1 Open Source Email Service 2026
Get free email forwarding for custom domains. Send & receive as you@yourdomain.com with unlimited aliases, 10GB storage, IMAP/POP3/SMTP & 100% open-source security. Trusted by 500K+ users. Setup in 2 minutes.

Big day: Leaflet now supports EMAIL NEWSLETTERS 📧📬💌 Turn on ~Newsletter Mode~ and readers can subscribe with email as well as atproto! This is in alpha, and only available with Leaflet Pro. Help us test & reach out with any q's! Drop your email at lab.leaflet.pub — we'll send something soon :)