Carrier Spotlight

What is Air Mail?

Sometimes your boxes and shipments will soar 39,000 feet in the air. From the time the USPS first experimented with mail flight in 1911 to the present day, letters and…
Carrier Spotlight

Can you mail eggs with USPS?

Which came first—the chicken or the egg?  The egg, if you ship it through the U.S. Postal Service! Since eggs are mailable with the USPS under certain guidelines, you can…
Carrier Spotlight

How to Dispute an Underpaid Package by USPS Automated Package Verification

If your package gets flagged for postage due by the new USPS Automated Package Verification (APV) system, what can you do? While this new machinery is state of the art and…
Carrier Spotlight

Free Guide: How To Ship To Canada With The USPS

Have you considered expanding your US-based ecommerce business to Canada? When shipping with the USPS, you will not be charged extra fees to deliver packages to Canadian destinations. If you want…
Carrier Spotlight

USPS Mailing Standards For Lithium Batteries

This article includes updates effective March 12, 2021 Shipping RegulationsWhen shipping lithium batteries, businesses must comply with U.S. Department of Transportation (DOT) standards and Pipeline and Hazardous Materials Safety Administration…
Carrier Spotlight

Is it OK to Mail Prescription Medicines Through USPS?

Wondering if it’s legal to use USPS to ship drugs? It’s definitely important to remain compliant with federal and state laws regarding the shipment of medicines, drugs, and controlled substances…
Carrier Spotlight

USPS Rules for Mailing Knives

Whether you need a good chef’s knife to carve up large cuts of beef, or a paring knife to core a tomato, knives come in handy for a variety of…
Carrier Spotlight

Important: USPS making changes to First-Class Mail International Flats

Jan 21, 2018 Update: Stamps.com has launched a new International Flat service.  Get more info on how to ship merchandise with International Flats. Merchandise No Longer Allowed in First Class…
Carrier Spotlight

How to Ship Water and Other Liquids with the USPS

If you’re thirsty for more knowledge about shipping liquids with USPS, you’ve come to the right place. Shipping liquids requires an understanding of USPS guidelines and restrictions, including which items…
Carrier Spotlight

Shipping to Mexico with USPS

Did you know that 48% of all Mexican imports come from the United States? And with an expected 84.9 million Internet users in Mexico by 2019, it couldn’t be a better time for e-commerce…