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Having long been genuine admirers of the United States Postal Service (USPS), which gives amazingly reliable service especially compared with many other countries, our team of investigators decided to test the delivery limits of this immense system. We knew that an item, say, a saucepan, normally would be in a package because of USPS concerns of entanglement in their automated machinery. But what if the item were not wrapped? How patient are postal employees? How honest? How sentimental? In short, how eccentric a behavior on the part of the sender would still result in successful mail delivery?
Testing the Limits

We sent a variety of unpackaged items to U.S. destinations, appropriately stamped for weight and size, as well as a few items packaged as noted. We sent items that loosely fit into the following general categories: valuable, sentimental, unwieldy, pointless, potentially suspicious, and ing. We discovered that although some items were never delivered, most of the objects of even highly unusual form did get delivered, as long as the items had a definitely ample value of stamps attached. The Postal Service appears to be amazingly tolerant of the foibles of its public and seems occasionally willing to relax specific postal regulations.
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$1 bill. Sealed in clear plastic, with label attached with address and postage. Days to delivery, 6.

Rose. Postage and address were attached to a card that was tied to the stem. Delivery at doorstep, 3 days, beat up but the rose bud was still attached.

Never-opened small bottle of spring water. We observed the street corner box surreptitiously the following day upon mail collection. After puzzling briefly over this item, the postal carrier removed the mailing label and drank the contents of the bottle over the course of a few blocks as he worked his route.