How can you search all folders at the same time on my email account?
Does the email account log me out......something about used tokens!!!! what is this
Are you using the BT email app or are you using a web browser.
Presumably it is the BT email app and if that is correct he token is a known problem, amongst others.
My advice and that of others would be to uninstall the BT email app and use either the email app that came with your device or one of the many other email apps that are available.