Hi
this macro lets you put a text string (eg an email address) into an input box and then searches for that string in the three specified sheets. If it finds the string it returns the name of the sheet where it was found in the active cell (in your example, I assume this will be in the master list sheet). Is that what you want? it will only return one sheet name if the address is on more than one sheet, and does not check to see if you are running the macro from the master sheet, but could easily be tweaked to do that if you like.
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