As a user, Eudora has email filtering. I suspect your client does too. You can't force the recipient to upgrade their software. You may need to put them (as opposed to they doing themselves) into DIGEST mode. When I run certain lists, it was my habit of: SET listname NOMAIL NOPOST FOR bouncer@host When the individual came back and saw this, IF THEY SAW IT, I would send them boilerplate about their OOOs and my inability to process them repeatedly on a multi-K subscriber list. Some "got it." /Pete PS -- there were two reasons for our including NOPOST along with NOMAIL ... see if you can come up with good reasons. We were already using REVIEW for new subscribers too. [Don't email me your answer.]