Self-hostable software: Mail Delivery Agents (19)

A production-ready containerized mail server with SMTP, IMAP, LDAP, anti-spam, and anti-virus services.

Postal is a complete, self-hosted mail server for websites and web servers.

A one-click, easy-to-deploy mail server appliance for self-hosting email on Ubuntu.

mailcow is a dockerized mail server suite for self-hosted email management.

A composable all-in-one mail server that handles SMTP sending and receiving, IMAP storage, and related email security protocols.

Mox is an open source self-hosted email server with SMTP, IMAP, webmail, and a web admin interface.

Modoboa is a mail hosting and management platform with a web user interface, administration panel, and webmail.

A setup script for installing and configuring a self-hosted email server on Debian or Ubuntu.

iRedMail is a full-featured mail server solution for deploying self-hosted email services.

Dovecot is a mail server software project with configuration and RFC implementation documentation.

DavMail is a gateway that lets users access Exchange and Office 365 mailboxes with standard mail, calendar, and directory clients.

An IMAP server for mail access, with support for email, contacts, calendar, and related messaging protocols.