Wallace: I need to charge up my phone purchase bimatoprost online BT Broadband customers can still keep their email address by linking it to their BT Broadband account free of charge. However, those who are currently on dial-up, or those who have a BT email address but are no longer with BT for their broadband, will have to move to BT Premium Mail for £1.60 a month if they want to keep their email address.