on 27-10-2020 11:45 AM
on 26-10-2020 02:54 PM
Do you still have access to your TalkTalk MyAccount? You can delete the mailbox email address right there. Managing your email in My Account see Delete an email address.
If no longer a customer and no access to a MyAccount or the email addresses were not added to the MyAccount then make a request to the TalkTalk Data Protection Office (DPO) to delete your email mailboxes under your GDPR Right to erasure. Heads up that the DPO team will need to verify your identity and that you're the registered user of the email addresses.