content: It's "free" (TNSTAAFL applies for obvious reasons) and people that made their accounts a while ago and our busy with other stuff and don't feel like transitioning stick to it. Besides I read an article a while ago that had a guy running his own email account maximum privacy I read an interesting article a while ago one guy had made his own email service and made sure that it was totally anonymous.  Then he talks to some other major tech dude that uses gmail and he asks him:   "how can you be okay with the lack of privacy!?" to which he replies "all my friends and coworkers use gmail which means they can see whatever I send anyway." So privacy meister runs some tests and despite all his measures 50% of his emails had no solid privacy due to the fact that most other people do not protect themselves.