Bell

Many thanks for confirming this, ZaneP and WelshTerrier.  That is what I had thought it was, and had not clicked the link.

The email text reads: Dear User, We regret to inform you that your mailbox is scheduled to be shut down on the 7th of September 2023. This action is part of a necessary upgrade by BeII, as your current mailbox is outdated and has expired. To continue...