How to handle mis-sorted mail at USPS to avoid missing a delivery

When you encounter mis-sorted mail on a USPS route, the most troublesome part isn't having an extra letter; it's not being able to distinguish on the spot whether it's a missort, a misthrow, or just a misread address for your route. During morning casing, I pull out anything in the DPS that clearly doesn't belong to my street segment, and I put flats and small packages in a separate slot so they…