I use Hushmail, not for security, but because I wanted to use a provider that doesn't use my email to build an advertising profile. Fastmail was also an option.

I use Hushmail, not for security, but because I wanted to use a provider that doesn't use my email to build an advertising profile. Fastmail was also an option. Personally speak, because it can transverse a number of insecure systems, I treat email like a postcard.