Open the Apple Mail application. Once open click on the Mail menu and pick Preferences.
Click on to the Account Information tab and click on the + on the bottom left to add a new account.
Use the following details for setting up your account.
Account Type: POP Account
Description: Account Description
This can be anything you like
Email Address: email@example.com
Full Name: You’re Display Name
This will be the senders name
Incoming Mail Server:
User Name: Pop Box User Name
Password: Pop Box Password.
Once you have filled that part out click the Options button in the Outgoing Mail Server section.
123-reg.co.uk don’t currently provide outgoing SMTP services so we suggest you use your Internet Providers SMTP server.
If you are unsure of any of these settings please contact your internet provider.
Outgoing Mail Server: SMTP.YourISP.com
Server Port: 25
You should now be able to send and receive emails using Mail.