Can one purchase tracking for a 1st Class letter in a regular #10 envelope at the post office?
I know this can be done on eBay but I sold stamps and put them in the wrong category so eBay wanted to charge me $3.90 for postage. The stamps weigh well less than 1 ounce. If it had been in the correct category it would have only been 0.60. So since I don’t have the eBay option can I get tracking if I pay for 1st class postage at the USPS post office? Thanks!