M

milter

Multi-purpose security milter.

libMilterPHP is a Postfix/Sendmail Milter library implementation in PHP.

DMARC library and milter module implemented in Python.

AxeSMTP is a toolkit, including applications, for modifying SMTP traffic while passing through.

Low-level Rust FFI bindings to libmilter

Rust bindings to the sendmail milter library