No spam filter is perfect; I still have to wade through a few emails every day that spamassassin doesn’t catch.
Some of the most successful ones are those that insert chunks of text from freely available sources. (One spammer frequently samples works from Project Gutenberg.)
Usually these will get run through some primitive form of Markov Chainer, which will munge the contents up enough so they’re not easily matched to existing sources, but language-like; …enough to fool the heuristics on most spam filters, anyway.
Since I still browse most of these emails using PINE, I am thankfully spared the graphic ad (usually for male enhancement supplements) and instead only see [IMAGE].
But I usually glance over them, just to double-check. And today I found myself reading the whole message body from one of them. It’s a somewhat jumbled, but otherwise touching, glimpse into another person’s life. My guess is that someone got some spyware on their computer that ransacked their inbox or their sent-mail, and it stole their email.
Here’s the content of the email, formatting preserved and all: