what email service to use? (domain linking is a must.)

Hi,

I'm in need in of a not too expensive email hosting service that has been around for a while

it would be nice if i could pay yearly.

Currently im happily using http://ift.tt/1N882yi but it does become expensive when you want to upgrade storage space (see screenshot below)

there might be better deals out there?

Thanks all.

http://ift.tt/1dvHQ0Z