Email is managed by main campus computing services. As of August, 2016 all new student accounts are created using Google's G Suite. Your email account is created with your Andrew ID. Your email address is [Andrew ID]@andrew.cmu.edu.
Current Heinz students using Microsoft Exchange are permitted to migrate to Google Mail. To migrate, use the mail migration tool.
Online Email Client
You can access the email from your browser. The URL is https://email.cmu.edu