Perhaps they're just buying one another's IDs and they don't know it :-)

I had been enjoying that brief period of next to nothing... now, I checked one account and out of 124 messages, all but 1 was spam. And that lot was received in less than 24 hours. I cleared out 700 odd messages at the weekend and last night there were another 200+ sat in my trash.

It's absolutely ridiculous. When MS said 97% of email is spam... in my case they were absolutely correct! Even with aggressive spam filters, I still get over 20 through a day not marked as spam. I sometimes wonder why we even bother with email these days.