muacrypt is a support tool for implementing Autocrypt Level 1 compliant
mail agents.

Autocrypt state is kept in one or more accounts which process and produce
autocrypt headers from respective incoming and outgoing e-mail. Each
account is tied to a set of e-mail addresses, specified as a regular
expression.

Functionality is exposed through a command line tool muacrypt and a
Python API obtained through import muacrypt.

WWW: https://pypi.org/project/muacrypt/