After a lot of reading I don't think there is any email service anywhere that is actually secure. The metadata on email is too extensive and the reach of the NSA (et al) is too broad. If you have to secure the contents of your email you're going to have to encrypt it yourself. If you just want to get away from advertisers deusexcaelo has complied a nice list of email services. but don't think any of them are "private". They're not. Email is inherently insecure.