<p>The BT Sport app is closing on 12th October. For more information on activating TNT Sports on the discovery+ app please visit this link, <a href="https://community.bt.com/t5/TNT-Sports-on-TV-Online-player/The-BT-Sport-app-is-closing-on-12th-October/td-p/2312034">The BT Sport app is closing on 12th October.</a>
As regards what you were told about paying to keep your email address a few years back, that was correct back then but not for the last couple of years.
As regards your comments about Apple software on an Apple device, If you re-read what I posted I was referring to using software ie apps other than from the manufacturer of those devices using the devices operating systems ie software, not about hardware so it is relevant.
Given that you have had problems with the BTMail app for over a year I am surprised that you are sticking with it