I run a github pages blog at aajkakavi.in and email at webmail.aajkakavi.in . The webmail is hosted via my dns registrar bigrock which does not support ssl lets encrypt for webmail until they are the webhost for the site. I wish to install ssl manually using cpanel for my webmail. My github pages apex domain is already protected by https enforcement.
before installing a certificate you have to create one.
Check the list of client implementations:
There are other users who had used acme.sh with cPanel.
Certificate created -> you can install it. But manual is painful, you have to do that every 60 - 85 days again.
Thankyou it would probably be better to switch the email host than do the whole process every two months