Webhow long does a missing mail search usually take? I’ve looked this up very generally online, and i’ve seen some responses say it can take anywhere from a few hours to 3. Weblearn how to see the results of previous missing mail searches on the usps website. Updated over a week ago. See previous missing mail search results: Webhow do i check the status of my missing mail search request? You can access the missing mail search history page in the missing mail application to view the status of all…