Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!zaphod.mps.ohio-state.edu!mips!svcs1!rls
From: rls@svcs1.UUCP (Bob Strait)
Newsgroups: comp.mail.elm
Subject: Re: Registered mail
Message-ID: <516@svcs1.UUCP>
Date: 30 May 90 22:21:10 GMT
References: <890@geovision.UUCP>
Reply-To: rls@svcs1.UUCP (Bob Strait)
Organization: Silicon Valley Computer Society, Sunnyvale, CA.
Lines: 22

>My question to the net, is: Has it been done before?  If not,
>would my implementation get into ELM 2.4?
>
>What I'm planning is a new header, like X-Registered, and a hack
>to the message reading bit that check for this header && the
>unread flag, and sends a message to the sender along the lines of
>"Your message so-and-so, with Subject so-and-so, has been read by
>so-and-so".
>

Yes, it's been done.  At least one version of System V's 'mailx'
that I'm aware of supports almost exactly the functionality you
describe.  How the implementation would graft into ELM I couldn't
guess.  But, if you get it done, I'd sure like to have the
patch, whether Weinstein & Co. buy it or not.  Put me down
for a copy.  

Of course, this implementation implies that both the sending
and receiving parties are running MUA's that support the
new header.

Bubba