^Content-type:.*html
htmlspam
A quick check showed that nobody was sending html-only email that I cared about, so I gave it a try. It caught 50 spams in 2 days, or about 25% of my daily volume.
Next into the bit-bucket, base64-encoded text/plain entities. A good excuse to play with MIME::Parser and MIME::Entity.
Now I should have been cleaning my study...
SpamAssassin tests for this (Score:2)
And despite you not having a false positive on such email, with the volume of email I get I've found that I can't just delete those: an occasional legitimate piece of email gets sent that way. So I'm forced to watch that folder about once every other day or so to see if some person is asking me something important.
That's the problem with spam filters for me: I can't afford to ignore legitimate
Re:SpamAssassin tests for this (Score:1)