Stalwart on Ubuntu 24.04 LTS

Overview

Stalwart is an open source, all in one mail and collaboration server. A single memory safe Rust binary speaks SMTP, IMAP, JMAP and POP3, runs a built in spam and phishing filter, signs outgoing mail with DKIM and verifies SPF, DMARC and ARC on inbound mail, runs Sieve server side filtering scripts and serves a web administration console for managing domains, accounts and queues. An embedded RocksDB datastore holds the mail spool, accounts and settings, so there is no separate database to run and far fewer moving parts to patch and monitor than a traditional Postfix, Dovecot, SpamAssassin and OpenDKIM stack.

It suits platform and messaging engineers, DevOps teams and small businesses that want a private mail server they fully control, with their mailboxes and mail data kept on their own server.

Common uses

• A private, self hosted mail server for a domain you fully control
• SMTP, IMAP and JMAP mailboxes for any standards compliant mail client
• Spam and phishing filtering with DKIM signing and SPF, DMARC and ARC verification

See it running

Real screenshots taken while testing this image against its deployment guide.