The reseller server that each domain domain is hosted on have a their own cPanel. In each of their cPanel's there's AfriBackup Restore. AfriBackup Restore is for your website and mail backups. To do the backup of the mails, in Afribackup Restore, on the far right there are 4 icons, Browse, Browse Database, Download and Send to Agent. On the far left is the date and time for each backup done for your domain. When you click on Browse you will see a folder called Mail, that would be the backup for all your mails on your domain. If you want to do a backup of certain email account just double click on the Mail folder and you will see the folders of the mail account on that domain. You would just select the ones you want to download. The best way to backup mails for seperate email accounts is by using your mail client to backup mails in a .pst format.