Compare software

chasquid vs Postfix: catalog facts
chasquid	Postfix
Free Free and open source under the Apache 2.0 licence.	Free Free and open source.
Linux, Self-hosted	macOS, Linux, Self-hosted
Secure defaults that prevent open relays Virtual domains with per-domain users and aliases	Security-focused design Runs on many Unix-like systems
Aimed at individuals and small groups rather than large deployments Needs Dovecot or similar for mailbox access	Transfer agent only; needs a separate IMAP server for mailboxes Configuration requires mail server knowledge
Downloadable app, Self-hosted	Self-hosted
Open source	Open source
License: Apache-2.0	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.