: Independent stores like PostNet or Mail Boxes Etc. typically stock various flat rate options and can help with packing.
: For larger quantities (packs of 10 or 25), you can order them for free at the USPS Store . They will be delivered directly to your door at no cost. where can i buy flat rate shipping boxes
While they operate differently than the USPS, they also offer fixed-rate shipping options with dedicated packaging. : Independent stores like PostNet or Mail Boxes Etc
: Retailers like Staples and Office Depot often carry flat rate boxes. They may provide them for free if you purchase shipping services through them, or they may sell them as part of their standard inventory. They will be delivered directly to your door at no cost
: You can also order these supplies by calling the USPS Package Supply Center at 1-800-610-8734 . 2. FedEx and UPS
: You can find flat rate boxes for sale on Amazon and eBay, though these are often resold or specialized versions.