Re: sorting uniquely by message-id

[e40 / envoy510]

Yeah, I use procmail for this:

# From Ahmon on 2/8/19
#   This creates a little database of already-seen Message-Id and will not
#   redeliver a message with an already-seen Message-Id.
:0 Wh: msgid.lock
| formail -D 8192 ~/mail/msgid.cache

On Sat, Sep 19, 2020 at 6:07 AM spaceman <spaceman@antispaceman.com> wrote:

Michael Richardson wrote:
>
> Due to the way that IETF lists and aliases work, I often get two, three
> sometimes four copies of an email.  I attach a mh-e view of a thread below.
> I really want to just keep the copy that went through the list, because
> that's the one that went into the public archive, and replies will work
> better on that version.
>

I might be completely off the bat here, but wouldn’t something like
formail (part of procmail) solve the probem of duplicates instead of
trying to hack a system of perl.

If you need to take account of messageid and listid it might not
help. Although you could run it on a per list basis with a different
cache (i.e. list of message ids) for each list.

Regards,
spaceman