By filtering your details, You're not deleting rows, you're hiding them. Hidden rows is often unhidden by selecting the row over and beneath the hidden row, right-clicking on them and choosing "Unhide". Inbox rules are applied to incoming messages based upon the order they're in throughout the Inbox policies record. https://troyphwit.kylieblog.com/34648172/auto-filter-can-be-fun-for-anyone