This might or might not be possible, it depends on how identical the messages are.
If both messages look like this it might be very hard to do:
Code:
From: some.user@some.address
To: user_01@your_address, user_02@your.address
Subject: some identical header
Date: Wed, 08 Jan 2014 12:39:52 +0100
X-Mailer: Claws Mail 3.7.6 (GTK+ 2.20.1; x86_64-pc-linux-gnu)
Content is the same as well
It is possible to put these messages into separate mail folders, the down side would be that you end up with both messages put into 2 mail folders. You might be able to use the
delete duplicate messages (in selected folder) option to clean up the folders, but that depends on how identical the messages are.
If the
To: field has one entry (say:
To: user_01@your_address and the other mail
To: user_02@your_address it is possible.
BTW: What do you mean by filter?
- Delete one of the two?
- Put each mail in an individual folder?
- Forward one, store the other?
- ???