I only have a few e-mail recipients...if my inbox has anything else, BAM! it's deleted.
Some innocent senders got blown away as a result, but it's a small price to pay for security. And if the e-mail was urgent, the sender usually tries to reach me by some other means...
... I don't expect anyone to notify me of being the recipient of a large sum of money, so therefore, I don't open anything from an unknown sender...
...and if the "Men in Black" want to find me, they know where I live...