These must be initiated by something using my email address and all I can do is to manually delete them all each day. I can't see a way to make Outlook block them in the first place, but this is only a Band-Aid and not a real solution.
At the times these emails are being sent, all my home computers are switched off at the mains.
I am reluctant to 'phone BT as I would get even more frustrated trying to explain my predicament to a non-native English speaker in India.
Allergy Advice: This post may contain traces of Meerkats.