Looks like you'd have to write some kind of script to do that and then tell
the rule to run that script for certain messages. I am not a programming
person so you might want to ask how to do that in one of the Outlook
Programming groups.

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Jocelyn Fiorello
MVP - Outlook
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> Please advise how I can use "Rules" to copy incoming email into a folder with
> the same reference. This would have to recognise a code "EN####" where the
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>
> Assume the folders are already created!