I'm finding that spam messages which are just images are getting past both my server's Spam Assassin and Thunderbird's filtering. (Not remote images - I block those – but attachments with zero message body text).
I would like to have a filtering rule to mark them as spam and delete.
Barring that I would like to be able to not load a preview of image attachments in the message display, but I haven't been able to find such a setting. I'm sure I've seen that in other email apps, is that really not available in Thunderbird?
Thx in advance -Ross
After further searching, I see that many email clients don't have an "empty body" trigger for spam filtering, however a work around is to filter msgs to the trash on the conditions:
body does-not-contain 'a' AND
body does-not-contain 'e' AND
body does-not-contain 'i' ...
…etc, so any (English at least) body is sure to have a few vowels, and get delivered, yet blank-body msgs with a only a pic attached get trashed.
Hope this helps someone else looking to filter email messages with blank body.
-R