To configure your email address in Mac Mail:

• Start up Mail
• Along the top-bar go to ‘Mail’ and ‘Add Account’
• Select ‘Add Other Mail Account’ and ‘Continue’
• At the next screen enter your Full Name, the Email Address and the Password you have set for that email address.
• Click ‘Create’.
• You should receive a notification that the ‘Account must be manually configured’. Click ‘Next’.
• You will now be at the ‘Incoming Mail Server Info’

Incoming Mail Server Info

• Pick your account type as IMAP
• In the Mail Server field enter the incoming mail server provided upon email account creation.
• In the User Name field enter the full email address you are adding
• In the Password field enter the password for the specific email address

Outgoing Mail Server Info

• In the SMTP Server field enter the outgoing mail server provided upon email account creation.
• In the User Name field enter the full email address you are adding
• In the Password field enter the password for the specific email address

After adding the account please confirm that the following settings are correct as well:

• Go to Mail > Preferences
• Go to Accounts and choose the IMAP Account
• Choose the ‘Advanced’ tab
• Clear the IMAP Path Prefix
• Disable ‘Automatically detect and maintain account settings’
• Click on the Outgoing Mail Server (SMTP) and ‘Edit SMTP Server List’
• Choose the ‘Advanced’ tab and ‘Disable ‘Automatically detect and maintain account settings’ here also
• Close the Preferences Window and make sure to hit Yes to the save question