I have a unique situation where I need an e-mail client to search for a certain type of duplicate criteria. Let's say I am expecting two email's in the same day that will have the same text in the body like "Google" or "Calculator". (I will be receiving e-mails with only a few words in the body.) I know I can filter these to a folder if it meets a certain criteria of some text per e-mail. However what I am looking for here is if there is actually two email's that arrive with the same text (preferably during a specified time period) I need to receive an alert for it. Is something like this possible in Thunderbird ? Any suggestions ? Thank yoi