BT are aware of this, however I doubt it will be a high on the list of things to do job.
If you want to stay logged in then just use the BT Mail app on your mobile phone.
I hardly ever use BT Email through logging on via computer, so always just login and then log out.
Also, what about security if you leave computer login as keep logged in and you're using a public or shared device?
It's not that hard for somebody to come along and gain access to what you've just been looking at and doing.
Even always logged in just at home isn't always safe if somebody gains backdoor access to your computer or BT account.
Also, try another web browser and see if it still occurs and just check your web browser or any third party programme, to make sure that cookies for BT Email are not being deleted when you exit the browser etc, as that could clear any cookie BT are using to keep you logged in.
Finally, however, I'm happy if BT Email logs out automatically on computer or mobile etc after a set timeout or after an app update for example.
Having to login after that is good for security and also helps to make you keep remembering your login details, even if you're used to autofill with passwords etc.
I do not subscribe, so please do not always expect a reply.
