Stalwart
SMTP Server
Modern SMTP server developed in Rust with a focus on security, speed, and extensive configurability.
Key features
Sender and Message Authentication
Features built-in DMARC, DKIM, SPF and ARC support for message authentication.
Strong Transport Security
Supports DANE, MTA-STS and SMTP TLS reporting.
Powered by Rust
Incredibly fast while ensuring memory safety. No runtimes or garbage collectors.
Frequently asked questions
If you have a question that is not listed here you may use the contact form below or write to us on Discord.
You can get help from the community by starting a discussion on Github or
Discord. You may also
become a sponsor and get support directly from Stalwart Labs Ltd.
Stalwart JMAP stores all metadata and settings in SQLite or in FoundationDB, a
high
performance
distributed database. E-mail messages are stored separately from metadata,
directly in the file
system using Maildir or alternatively on the S3-storage of your choice.
Contact Stalwart Labs
Have questions about any of our products? Use the form below and we'll get back to you as soon as possible.