[Users] Where do duplicate messages originate?

[Bob Williams]

On Sat, 2 Nov 2024 15:32:58 +0100
Jakub T. Jankiewicz wrote:

> On Sat, 2 Nov 2024 14:23:12 +0000
> Bob Williams <usenet at karmasailing.uk> wrote:
> 
> > Where do duplicate messages come from? I get quite a few, all in
> > mailing lists. Are they 'pushed' by the mailing list server or
> > 'pulled' by the MUA?  
> 
> The reason for the is because the person reply to all, including the
> author and the mailing list. So you get one from list and direct from
> the author.
> 
> I replied only to the list and not to you, so you should have a
> single email.
> 
Thank you. I probably wasn't clear enough in my original post. I am
well aware of the problem of replies being sent to both the list and
the poster, but that is not what I am talking about. These messages
are not duplicates because they are addressed to different
recipients.

I often see identical messages  in the Message List. When I use Tools >
Delete Duplicated Messages they are cleaned up, leaving only one copy
of the message. I am curious as to what causes these duplicates.

-- 
Bob Williams