>This happens because Outlook by default doesn't create a plain-text body of the message in addition to the HTML MIME part. The blank body appears to Listserv as a blank message. That's a new and very troubling bug! When people on my list started getting versions of Outlook that used Word as the default client, I had to change my list configuration to strip HTML. The problem with HTML is that Word is trying to use it as a document-format control language (that being what Word is really about), and puts layer after layer of highly specific format-control style specifications on every line. People could be sending email that was eight times the size it appeared to be. Size becomes important on an active list; HTML mail was filling up subscribers' mailboxes and causing their email to bounce, although I've got sizes limited to 100KB and the real monsters from Word were bouncing. Since I've cut off HTML, there's been a lot less problem with full mailboxes. So far, I haven't seen any cases where Word omitted the plaintext version. (And it IS Word, not Outlook, that controls that.) If new versions omit the plaintext, I will have to recommend to my subscribers that they demand MS fix it or find a replacement. So far, they've all been generating plaintext, which gets through. Hal Keen