From the beginning of August each year, we contact students by email. Prior to their first enrolment, we use the email address they give us during the application process. After their first enrolment, we use their Warwick email address (format usually something like firstname.lastname@example.org). We are aware that many students don't check their Warwick email address on a regular basis, and that Departmental staff will often use personal email addresses to contact students. However, our historical experience is that while students are very efficient at notifying Departments about changes of personal email address, they are less efficient at letting us know, in the centre.
We do warn students as part of the online enrolment process that we will use their Warwick address, and that they should set up forwarding rules for it.