Why do some stamps have barcodes and numbers like this? : r/USPS

Package returned return to sender written tracking bar code blocked out with sticker and address ripped off. Was this by buyer or USPS themselves? Weird : r/USPS

Are these AliExpress stamps counterfeits? : r/USPS

I need to send a letter out but is this acceptable? Bought stamp with barcode. : r/USPS

DMM 708 Technical Specifications

US Postal Service New Stamp Issues and images for 2022 - STAMPBOARDS - Postage Stamp Chat Board and Stamp Forum

What's in that USPS postage barcode? « Frederick's Timelog

How long after a US postage pre-stamp letter with a date on it is it normally sent out/received? The postage stamp says January 19, 2023, but I did not receive this until

Holy shit stamps! I didn't know you could use that many stamps for one package?! : r/USPS

What do USPS tracking numbers look like? - Quora

Philately

Thank You Stamp

If I suspect that the Forever Stamps I bought on Facebook are fake, can my local post office tell me? - Quora

Really TEMU???!!! : r/USPS