What is the smallest size box I can ship items in with USPS?

What is the smallest size box I can ship items in with USPS?

I am an online seller and I have used my own boxes many times for orders so I didn’t have to charge my customers almost for a flat rate box or envelope. I have even used boxes that have UPC codes on the side and boxes from stores that had item numbers and quantities printed on them that I simply covered up with a sharpie marker and they had no problems with it. My question is, Is there a limit on size as far as how SMALL a box can be. I know they have limits as to how large boxes can be but I have an order to ship out that will fit a box that is only 8 inches long and 2 1/2 inches wide, and I have never used this small of a box before.

Will they allow me to use this size box or will they make be get a bigger box or use a small flat rate box? I do not want to go ahead and tape up this box and label it with addresses if the post office is just gonna tell me that it’s too small to ship. What’s the smallest sized box you ever shipped an item or order in that the post office (USPS) did not have a problem with? I did not see any information about smallest size limits on their website so please do not give me a link to their website as I have already searched the entire thing, and all I saw was largest size limits.

Tags: items, ship, size, smallest, USPS

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