e-mail merge/sysnc

[Jeffrey L. Taylor]

I am looking for a program to merge two e-mail files/directories.  The
most immediate need is to be able to download my e-mail from either my
laptop or my desktop and later merge the two (I'm using ~/Maildir/
format).  It would also do the same with different formats so when I
change e-mail clients, I can bring all the saved e-mail into the new
client.  Anyone know of such a program?

TIA,
   Jeff
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