Depends who you ask and whether its business email or personal. Lots of businesses still use outlook or lotus notes and the email is stored on each client. And

Depends who you ask and whether its business email or personal. Lots of businesses still use outlook or lotus notes and the email is stored on each client. And then some people like to use what they use at work. When I worked for Nationwide insurance (50 to 60 thousand people) we could keep as much email as we wanted locally, but no more than 100 mb on the server. This is a stupid policy, but it is a common policy.