Ability to add/switch mail encryption from the default

We have faced the need to migrate from non-CPanel platforms multiple email accounts that used a different encryption method - particularly blowfish crypt (blf-crypt). Whilst dovecot supports this right out of the box in 11.100 (and probably all newer versions to date) and allows authentication when modifying the hash in the mailboxes /home/user/etc/domain/shadow file, webmail refuses to accept a different authentication method and denies access.

Would it be possible to consider adding different encryption methods or, at least, consider an easy way to switch it from the default sha512?