I'm using the iotek mail.
It's hosted in Norway, owned by us, managed by us, secured by us.
Never went down since we started it (3-4 years of uptime).

I had a bad history of jumping from one mail service provider to another and loosing all my stuffs in the process.
I stopped trusting other people with my mails. Even though we are in 2015 and some evangelists say that emails are gonna die I still think that emails play an extremely important role in my life.