Based on my experience with 1and1 as a registrar and as a host, I recommend not depending on them for anything, ever. They have atrocious customer service. Which is fine, as long as everything works (and if they're just your registrar, things should be fine, most of the time). However, when things stop working is when you need good customer service, and that's the point at which 1and1 will fall flat on their face.