Good afternoon @purple_kathryn, welcome back to the Community!
We've recently made some changes around how BT Webmail is accessed, so if you've got an older bookmark then I'd recommend deleting this, and also clear your browser's cookies and cache too?
Once you've sorted this, please head over to bt.com and select email at the top of the screen, then things should be good to go from here.
You can re-add this to your bookmarks from there, too.
Peter
