Dimensional weight is why a light box can bill like a heavy one. USPS multiplies length by width by height, divides by 139, and bills that figure when it exceeds the scale weight, but only for packages larger than 1 cubic foot.…
7 min read
Flat Rate Shipping · Weight Based Shipping
Flat Rate vs Weight-Based, by Zone
A USPS Priority Mail Flat Rate box is cheaper than weight-based postage only when the package is heavy enough and going far enough.…
6 min read
package theft prevention · porch piracy
Package Theft: What a Seller Can Do
A seller cannot guard a buyer’s porch, but a seller does choose how the package is handed over. With USPS, a signature requirement or Hold For Pickup at a Post Office keeps a parcel off the doorstep, and both are chosen when you buy the label.…
8 min read
Latest
USPS · Holiday Shipping
2026 USPS Holiday Shipping Deadlines: Last Days to Ship for Christmas
USPS has published its 2026 holiday shipping dates. To arrive before Christmas (Friday, December 25) anywhere in the lower 48 states, ship Ground Advantage by Thursday, December 17, Priority Mail by Friday, December 18, and Priority Mail Express by Saturday, December 19.…
2 min read
Hazardous Materials · USPS
Can You Ship That? The Everyday Items That Are Secretly Hazmat
Nobody thinks of themselves as a hazmat shipper. Hazmat is chemical drums and radioactive symbols, not the care package on your kitchen table.…
9 min read
Dimensional Weight · USPS
USPS Changed the Math on Your Boxes: The New DIM Divisor, Oversize Fees, and Size Rules
On July 12, 2026, the Postal Service edited one number in its pricing formula. There was no dramatic announcement, no redesign of the boxes at the counter, nothing you would notice standing in line.…
8 min read
Shipping Strategy · Small Business
The $0 to $1M Shipping Playbook: How Your Shipping Strategy Should Evolve at Every Revenue Stage
Every million-dollar brand started at a kitchen table, packing its first order with a prayer and too much bubble wrap.…
16 min read
Returns · Psychology
The Psychology of Returns: Why Your Return Policy Is Your Secret Sales Weapon
The Most Counterintuitive Sales Strategy You’re Probably Ignoring What if I told you that making it easier for customers to return products would actually result in fewer returns and more sales?…