College students are getting an email upgrade as more universities outsource their systems to Google and Microsoft. The move makes sense, since college-provided email inboxes are typically limited to about a hundred megabytes versus 70 times that storage on Gmail. It's also a boon for the two tech giants, who can win the loyalty of users. A national survey conducted last year found that 42 percent of schools had already outsourced their email service or were planning to; of those, 57 percent chose Google, while 38 percent opted for Microsoft. The schools that switch are saving millions, as both Google and Microsoft offer their email services to educational institutions free of charge.