Stalwart

Rust-based all-in-one mail server supporting JMAP, IMAP, and SMTP.

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About Stalwart

Stalwart is an open-source mail and collaboration server written in Rust, supporting JMAP, IMAP4, POP3, and SMTP alongside CalDAV, CardDAV, and WebDAV. It is designed to be secure, scalable, and straightforward to operate as a self-hosted mail platform.

Strengths

  • Modern JMAP support alongside traditional IMAP and SMTP protocols
  • Rust implementation aims for security and performance

Limitations

  • Requires self-hosting and server administration knowledge
  • Newer project with a smaller ecosystem than long-established mail servers

Details

Pricing
FreeFree and open source, self-hosted.
License
Open source, license not stated
Developer
Stalwart Labs
Platforms
Linux, Self-hosted
How it runs
Self-hosted
Best suited for
Rust-based all-in-one mail server supporting JMAP, IMAP, and SMTP
Categories
Email clients
Last verified
Added
Provenance
Selected from the TechWalrus Resource Hub (Email & Inbox); facts checked against the developer's own pages, 2 sources on file.

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