You can access either your domain or @afrihost.co.za by setting it up on a mail client. The settings for the @afrihost.co.za will be on client zone under Connectivity -----> Manage Email -----> Access Details
Your domain email password can be set in cpanel but Afrihost do not store it so you will have save it when you set it.
You can also access domoain email via yourdomain/webmail eg homeskill.co.za/webmail
Your @afrihost.co.za can be accessed directly by going to dslmail.afrihost.co.za