Vince Sabio wrote,
| In this sense, List-ID: is (or should be) preferred over the To:
| header as an invariant method of identifying a mailing list.
That is, for those of us who, as subscribers, want to identify mail with a
list only if it was distributed to us by the list. There are people who
want direct copies of responses to their posts and even private-only replies
(and the entire ensuing exchange) filed together with mail that comes
through the list mechanism.
| If the goal is to uniquely identify a mailing list to the
| subscribers, I agree that List-ID: is a good start. However, for
| those brane-ded MUAs that cannot filter on headers other than To:,
| From:, etc., List-ID: (alone) will not be useful; a quasi-invariant
| "standard header" would have to be used.
One way that some say has worked for them is to use the comment field of
To:, such as
To: sub@scri.ber (as a member of list@list.host)
or
To: list@list.host (copy for sub@scri.ber)
[or the equivalent in To: Formal Name <add@re.ss> syntax {I hope that
doesn't come out with double angle brackets}]. Alternatively, one can do
similar munging in the comment field of the From: header. Of course,
there's still the need to send an individually tailored dispatch to every
su6scri6er.
References:
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