Spam filters and coincidences
Sometimes, I think dark and angry thoughts about my Internet Service Provider. Today I logged into a mailbox I only use for a very few administrative tasks to do with the account. It is normally free of spam, with one or two emails to lists that annoy me because I know I said yes once and now I can't find the "I want to get out" button. Today the mailbox was stuffed with real CRAP!
Once I had deleted my way down the list to the real mail, I found, surprise surprise, an offer to test their spam-filter for free for a month.