How Do You Log Into Mac Email?
Mac email addresses that end in @mac.com can be accessed using the iCloud service offered by Apple. Simply create an account or log into iCloud using your Apple ID and password to access your email and other services offered and managed by iCloud, such as photo and data storage.
Log into iCloud
Use your Apple ID and password to log into iCloud.
Click the Mail icon
iCloud allows you to manage your @mac.com email as well as many other legacy Apple email extensions, such as @me.com.
Log into your mail account
Use your @mac.com email address and password to log into your mail account.