Anyone know about this? I'm sending a newsletter to a mailing list via PHP with, usually, a pdf file attached to the mail. People using Yahoo receive the mail (not classified as spam, which is good) but although the mail says there is an attachement, it's not accessible. Anyone know why this would be and if I can circumvent this? I've modified X-Priority to 1 but would there be other headers that I should modify? Something else? Thanks!