This guide is for the Mac program Mac Mail.
Before following the below step by step guide, please find the email sent to you which contains your email settings.
Step by Step Guide
Open your Mail client. Click on the Mail menu at the top of your Mac menu bar then Preferences.
In the Accounts tab, click on the plus symbol in the bottom left to add new account.
In the Choose a mail account to add... window, click the button for Add Other Mail Account.... and click Continue.
Enter your full name. Enter your full email address. Enter the password that has been sent to you along with your email set up information.
Next you will be presented with Server Info window. Ensure that you choose IMAP, enter the following in the Incoming Mail Server field: zimbra.protectedservice.net. For Outgoing Mail Server enter the following: smtp.protectedservice.net.
When asked select the apps that you wish to use with the email account, the Mail checkbox is required but the Notes checkbox is optional. Then click Done and your new email account should now be setup. You can now exit the account setting window and you will be returned to your inbox.