I have my gmail set up a way i like to use it
you have email@example.com but this is for signing in to it only
then you have firstname.lastname@example.org this is the one i use for one off sign ups (spam city)
Then the is the one i use for sites like this one email@example.com
and if i make a folder in my gmail named bt all the +bt go's in it.
The issue I'm having is that BT ID will not let me use an e-mail address that has a + in it
so it's just going to the inbox that gets emptied every week at the moment I am moving them to the folder
but this will not do forever pls fix this so I know I'm getting all the e-mails that BT send me.
You've got more chance of winning the lottery every week for a year than getting BT to change it.
Then replace the '+' by '.' in the email addy you use to register here, i.e "firstname.lastname@example.org"
Then at the GMail end filter anything To containing ".bt" or From "BTCare Community Forums" to your special folder.