chasquid is an SMTP (email) server with a
focus on simplicity, security, and ease of operation.
It sends and receives email as a typical
MTA (for example, can
be used instead of Postfix or
Exim), and it is designed mainly for individuals and
It's written in Go, and distributed under the
Apache license 2.0.
- Easy to configure.
- Hard to mis-configure in ways that are harmful or insecure (e.g. no open
relay, or clear-text authentication).
- Monitoring HTTP server, with exported variables and tracing to help
- Integrated with Debian, Ubuntu, and Arch.
- Supports using Dovecot for authentication.
- Multiple/virtual domains, with per-domain users and aliases.
- Suffix dropping (
- Hooks for integration with greylisting, anti-virus, anti-spam, and
- International usernames (SMTPUTF8) and domain names (IDNA).
- Tracking of per-domain TLS support, prevents connection downgrading.
- Multiple TLS certificates.
- Easy integration with Let's Encrypt.
- SPF and MTA-STS checking.
The how-to guide and the
installation guide are the
best starting points on how to install, configure and run chasquid.
If you have any questions, comments or patches please send them to the mailing
To subscribe, send an email to
You can also reach out via IRC,