Stalwart replaces 23 paid apps
One open-source tool, 23 subscriptions it can stand in for. Each pairing below is curated and verified by hand, with the honest catch spelled out. No votes, no pay-to-list.
licenseAGPL-3.0
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Superhuman alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Missive alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Fastmail alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Canary Mail alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Helpwise alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Hiver alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →all Mailbird alternatives →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →
Modern all-in-one mail server in Rust with JMAP, IMAP, and SMTP plus built-in spam filtering.
the verdict →last updated 2026-08-29 · up to $2,088/yr replaced · no votes, no pay-to-list