This would be straightforward to do with Lyris. A mailing list could be made
anonymous (so the sender's email address did not appear in the FROM or
REPLY-TO address. Then you just create a "Header" (or a "footer") For each
outgoing message that inserts the "Name" of the sender rather than their
email address. Or, you could have the "Name" of the sender in the "From"
address with Lyris as the email address. Like this:
From: "Candace Hiller" <email@example.com>
To: Lost and Found" <firstname.lastname@example.org>
Subject: [BLDG-LIST] I found some keys in the elevator
See Lyris for freeware version:
The Free license limit is 200 members.
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<The flood of careless, unconsidered, cheap words, is the
greatest enemy of the profound word> -Stephen L. Talbott