"Sky will be sending you a welcome pack as well."
And a copy of every email you have ever deleted.
Seriously, I'm with Sky (because they bought the ISP that was the only one in the exchange that wasn't BT) and it's OK as a basic home broadband. I moved to using gmail as an email sender but that's because I'm the geeky type that likes to control my reply-to headers. I think port 25 is also unblocked so you may be able to run your own MTA.