Which ready-made mail server with API should I take?

Question

API

There is a task: to install your mail server (with a web interface) with the ability to add domains and mailboxes via API. Preferably a ready-made "box version", and not self-configuring a set of 10+ components.

A lot of domains and mailboxes will be added, so it is necessary with the API, and not through manual addition in the admin panel or configs. So far I have googled https://mailinabox.email/ and https://iredmail.org/

from ready-made kits. Tell me more solutions.