It works in a single folder only. It's actually a set of the following commands: - D tells mutt to delete messages by pattern - ~= is pattern which selects

It works in a single folder only. It's actually a set of the following commands: - D tells mutt to delete messages by pattern - ~= is pattern which selects all the dupes in current folder - $ finalizes the command I think this [1] is where I learned about it and there's also a handy folder hook for mutt which automatically removes duplicates when you open the folder. [1]: http://promberger.info/linux/2008/03/31/mutt-delete-duplicate-e-mail-messages/ http://promberger.info/linux/2008/03/31/mutt-delete-duplicat...