Is it possible to create a tool that would facilitate the import only of mail from other servers?
For example, if a client wants to migrate to me from plesk or cpanel.
It would be a very useful tool.
This is a planned feature. In the meantime you could use imapsync either locally or on one of your servers.
Just to add, from 9.1.0, customers can import entire cPanel backups directly including all emails.
Adam Congratulations! I'm not using cPanel, but I know this was a big milestone for Enhance.
We provide an online imapsync tools for free for everyone.
You can access it to https://imapsync.maxihoster.com