Usually my ISP does that sort of thing, either by holding back junk, or putting it in a junk folder, or adding some characters to the subject line. But the way they do that is a lot more complicated than just a one- or two-line check for certain key words.


Once your ISP has marked junk or spam, you can create a rule in Outlook that says, eg, "if the subject line contains the string '*** SPAM ***' then move it to such-and-such a folder". That is, you can do that if you trust your ISP's judgement on what constitutes spam. Personally I insist on checking all my email, just in case. But I've found it to be pretty good.


If your ISP doesn't filter email at all—or if you run your own email server—I'm not sure what you can do. You could try writing a complicated VBA/Outlook program, but I don't think I'd know how to do that with any reliability. Surely there are add-on programs out there somewhere, shareware maybe?