Click the Add Account Button
Choose the “Manual setup or additional server types” option and click Next
Choose “POP or IMAP” and click Next.
In the User Information section, enter your name and your email address
In the Server Information section choose POP3 or IMAP and enter your email server address in the Incoming and Outgoing server boxes.
Your email server address is “mail.” followed by your domain-name. E.g. if your domain name is example.com you would enter mail.example.com
In the Logon Information section enter your email address into the User Name box and your password into the Password box.
Click the “More Settings” button
Click the Outgoing Server tab and tick the “My outgoing server requires authentication” box.
Click the Advanced tab and change the Outgoing server port number from “25” to “587”.
If you are using POP3 and “Leave a copy of messages on the server” selected please make sure to have “Remove from server after x days” selected as well.
Click Next followed by Finish.