You must choose whether you want to utilise POP3 or IMAP when entering the information for your Incoming Mail Server. POP3 downloads and deletes all of our server’s emails, whereas IMAP synchronises your email client(s) with our server’s emails. If you plan to use this email account on several devices, IMAP is the best option because everything will be synchronised.
Not sure if you want POP or IMAP? Read more about it on Webmail and Email Applications: IMAP and POP.
Select your account type, either IMAP or POP.
Enter mail.example.com as the Incoming mail server, replacing example.com with your own domain name.
Fill in your full email address as the User Name.
Write the Password of your email account.
Configure the Incoming and Outgoing Server.
After you’ve configured the incoming server, you’ll need to configure the Outgoing Mail Server (SMTP).
Click the Server Settings button. You will be prompted to further configure your Outgoing Mail Server.
Enter the Outgoing Mail Server again.
Select your Server port:
Choose Password for Authentication.
Replace the User Name and password for that email account with the full email address.
Tap the OK button when finished.
That’s it! Your email account should be added to your Apple Mail client.