I set up my own domain (hosted by InMotion, who have fantastically good customer service) and run my email through that. My initial reservation was that I'd be

I set up my own domain (hosted by InMotion, who have fantastically good customer service) and run my email through that. My initial reservation was that I'd be relying on spam filters that were inferior to Google's. In practice, it hasn't been a problem at all. Obviously, this is anecdotal, but the light-years ahead advantage in spam filtering that Google one had seems to have eroded to the point where it's no longer enough to keep me on gmail. I still have my gmail account, but it's no longer primary.