Charles Curley writes:
On Sun, 11 Dec 2022 10:59:02 -0800
David Christensen <dpchrist@holgerdanske.com> wrote:
Thunderbird message duplication bugs have existed for several years.
My work-around is to periodically delete older messages and/or delete
duplicates in Junk, Trash, etc..
This is one place claws-mail would come in handy. It has a tool for
deleting duplicate messages.
Or, if you are filtering/sorting incoming email through procmail(1),
the References: header will contain a same ID for duplicate emails,
(which is derived from the Message-ID: header.)
Something like:
:0 Wh :msgid.lock
| formail -D $idcache_size msgid.cache
in ~/.procmailrc will eliminate a duplicate email.