Fasthosts vs 1and1 hosting service

Hi, does anybody here have any experience with PowerStore v2 or v3 on fasthosts.co.uk.

I have both versions, but I have yet to get the thing to send any type of email via the store pages wether it be registration emails, verification emails or even sales based emails. If you're on fasthosts, have you managed to get any emails sent from the store?

Webassist recommend 1and1, so if I do get to the point of no return with fasthosts and I choose to switch, does the admin email facility in pPowerStore 3 work straight out of the box with 1and1?

If anybody answers yes, then I might just make the jump anyway. I am getting no help from fasthosts in trying to fix this email problem.

Thanks.

Mat