Bt premuium mail have charges of £1.60 per month if you don't have a bt phone line
well I just kicked up a stink and they sent me a link to get it for free..
might be of use to someone so thought id share it with the masses
typed this into the address bar and just added my email addresshttps://www.productsandservices.bt.com/consumer/edw/premium-mail/
After 12 months are up it is £1.60