NitroMTA documentation

NitroMTA is a self-hosted mail delivery engine that speaks the Amazon SES v2 API. These guides take it from your own machine to your own servers.

Start

• Try it in capture mode: the whole engine on your machine, each message shown in a browser instead of sent.
• Installation: from a bare Linux host to the first delivered message.
• Choosing a host: what a sending server needs, and which providers allow it.

Move from SES

• Migrating from SES: your application, domains, events, suppression list and mail, moved one at a time.
• Compatibility: the SES operations, SMTP and events, and where the engine differs from SES.

Run it

• Operations: why a message is waiting, the queue, metrics, holds, warmup and keys.
• Durability: what an acceptance promises.
• Benchmarks: NitroMTA, KumoMTA and Postfix on the same machine, and how to run it yourself.

Reference

• Command line: every command and its options.
• Configuration: what nitromta setup writes, every setting explained.