[MlMt] how to find/clean duplicated messages

[Paula R. T. Coelho]

hi there,

i used MM to move lots (thousands) of messages from one IMAP account to 
another. but i did a mistake, mislead by the `All Mail’ in a Gmail 
account, and I ended up with duplicated messages in the destination IMAP 
account (with different IDs, but same messages).

is there a way to use MM to locate and then clean the duplicates in 
batch?

thanks,
paula