I had over 20 cards I sold returned to me and stuffed in my mailbox by the USPS in North Carolina and probably more to come. They weigh .7 oz and all envelopes were perfectly fine according to eBays shipping rules with a $00.64 printed shipping label on them. When I went to the post office to ask why the envelopes were stamped "additional postage required" and returned they said they got new machines and my envelopes are non-machinable because they will not bend from one end to the other a...

Anyone getting their sports cards returned to them from USPS because they're "non-machinable"? | Ask a Mentor

Anyone getting their sports cards returned to them from USPS because they're "non-machinable"? | Ask a Mentor | eBay Community