TalkTalk says WalkWalk if you've got a mouldy Tiscali email address, or pay £50 a year to keep it
https://www.theregister.co.uk/2019/10/04/talktalk_kills_tiscali_legacy_email_addresses/
TalkTalk will start charging £50 a year for its legacy email accounts unless you sign up as a broadband customer of the breach-scarred telco. And if you don't pay, it'll delete your account.
Presumably sick of ex-customers with ancient Tiscali and TalkTalk Mail addresses talking to The Register about why TalkTalk customer service is so painfully slow to shut them down when things go wrong, the company will kill off their accounts too.