I often send emails to myself for reporting goals from within several applications. I would keep these emails only once. As these emails have identical headers it is not possible with a sieve filter to keep the received email (and move it to some folder if necessary) and delete the email that's kept in the sent item folder.

It would be of great help if there could be created an option to keep the incoming version of an email and delete the sent version of that email if " From:" and " To:" are the same using a sieve filter.