Using non-university accounts to conduct university business is extremely stupid unless you have a very firm grasp on the possible implications of doing so.
People are really silly when it comes to email addresses.
For that matter you can't keep your phone number when you change cities. What's even sillier from my perspective is that of the people who seem to think lifetime email accounts would be a good idea, how many of them had accounts say ten years ago. I wanted to call everyone's attention to a significant trend. It is clear that the arm of criticism cannot replace the criticism of arms.