Originally Posted by dream56
My post office told me Priority Flat Rate Envelopes could not be bulging and had to be fairly flat or post offices could charge you more.
Try to go to another post office then. Cause all the ones Ive used tell me the same thing.. if it fits it ships.. flap must fold and clear packing tape on flap and mailing labels are fine.. I host the 10.5in swaps and I can fit 72 squares ( 6 yards) in one envelope with no problem with my dinky PO, Republics PO, Mt Vernon's, or Springfield's Post Offices..