A customer here wants to receive a "read receipt" when list subscribers have
opened messages sent to the list.   I know that it depends on the
recipient's e-mail client sending a receipt, but I haven't been able to get
this to work at all.  I've experimented with different subscriber mail
header options (FULLHDR, IETFHDR, etc.) to see if I could get Listserv to
include the appropriate e-mail header to allow the feature to work, but with
no luck.

I'm wondering if anyone has successfully used read receipts with Listserv.
Any information would be appreciated.

Thanks,
Scott Elder
University of Houston