I've recently been sending a few letters and one of them has not been delivered yet, and I don't think I stuck the stamp in the top-right corner of the letter. So does it matter if a stamp is not stuck in the top-right corner of a letter and why are stamps frequently placed here on post?

  • Welcome to TSE. This question does not appear to be related to travel, but for what it's worth, each postal service sets its own standards for how to format letters and parcels for delivery, and by and large these follow international addressing conventions set forth by the Universal Postal Union (established in 1874 and now an agency of the United Nations). – choster Jan 17 at 23:14
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    Historically top-right corner may have been chosen because the majority of postal workers sorting the post manually were right handed. Not placing it in the standard location will delay delivery because the letter will not pass the automatic sorting process and will have to be sorted by hand throughout its journey. – Traveller Jan 18 at 0:02
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    You would do well asking this on the History SE because there’s a really good background to postage and international mail handling standards. – Moo Jan 18 at 0:55
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    I’ve just checked Wikipedia and UPU. Wikipedia has no content on the postage zone of an envelope. UPU is impenetrable both technically and in terms of clarity. – Samuel Russell Jan 19 at 0:49
  • mind that the only (now deleted) answer to this question is off topic for this History.se but would have been on topic in the context of travel.se. – jwenting Jan 23 at 5:49

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