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I have an IMAP email account, and I get quite a bit of "click this link to see me naked" style spam. There's nothing consistent in the text, TO or FROM of the messages that I can use to filter them, but in the source code there are .ru links and other unique strings.
I use thunderbird as my client, and the filters only seem to scan the text that is visible in html viewing mode. This includes filter add-ons like filtaquilla.
Is there any add-on, alternative client, or script I can use to search the source code of messages for my spam filter? If I could do that, I think I could block nearly 100% of repetitive spam with ease.