I think it would be hard to accomplish in Outlook (or at least not clear
to me how to do so).  Using a list manager already developed seems the
best course to me, as suggested by Sue.

As an alternative to that, I don't know what access you have to your
mail server, but if by chance you do, then maybe you can add some sort
of processing on incoming mails, or on the mails held in a special mailbox.

WE have setup here using a Linux server with Sendmail SMTP sending mails
and Fetchmail getting mails from the mail provider at the ISP.  The
*outstanding* program called "procmail" could be easily set to capture
these messages based on the obvious rules plus rules that you'd learn to
apply.  These captured messages would be processed through some sort of
program written with tools that provide easy access to the mail message
(Perl, Python, etc.) to automatically populate a database with the
infomation you wish to keep.  In that database you would then flag the
mail for what you want to do based on what they ask.

We use this type of thing to process incoming emails from people
"booking" to events for a professional club that I help manage.  Works.

I mention this approach since it's possible you have this mail
infrastructure and with this infrastructure and a bit of system setup
you'd have what you want. Perhaps worth it for your business to buy in
the expertise for a few days or so.

By the way ... don't think there is a "standard"

Hope this is useful to you.  Let us know.

rms

I think you misunderstood my suggestion. I wasn't suggesting that you buy a
list of addresses, but that you use established list management software
that already understands the variety of NDRs in current circulation (there
is no single standard) and will likely to be updated to handle any new ones.