usps
Book Sellers Shipping Guide: Media Mail and Beyond
USPS Media Mail is the book seller secret weapon, but it comes with rules. Plus: when to use Priority Mail, how to pack books that arrive undamaged, and managing a high-volume book business.
Address Verification APIs: USPS, Google, and SmartyStreets Compared
Bad addresses cause failed deliveries and wasted money. I tested three address verification APIs with 500 real addresses to see which one actually catches errors.
FedEx vs UPS vs USPS: Complete Carrier Comparison 2026
The definitive 2026 comparison of FedEx, UPS, and USPS. Compare rates, transit times, services, surcharges, and features to choose the best carrier for every shipment type.
UPS Simple Rate: Flat Rate Shipping Simplified
Everything you need to know about UPS Simple Rate flat-rate shipping — how it works, pricing tiers, eligible services, box sizes, and when it saves money versus standard rates.
USPS Tracking Statuses Decoded: What Each Status Means
A comprehensive reference for every USPS tracking status — what each one means, what triggered it, how long to wait, and what to do when tracking seems stuck.
USPS Delivery Instructions and Special Handling Codes
Learn about USPS delivery instructions, special handling codes, package intercept, hold for pickup, and how to customize delivery for your shipments.
USPS Click-N-Ship vs Third-Party Label Platforms
Compare USPS Click-N-Ship with third-party shipping platforms — pricing differences, features, integrations, and which option saves you more money.
USPS Address Correction and Forwarding: What Shippers Need to Know
Everything shippers need to know about USPS address correction services, mail forwarding, return to sender policies, and how to minimize undeliverable packages.
USPS Hazardous Materials Shipping Rules
Complete guide to shipping hazardous materials through USPS — what you can and cannot ship, ORM-D rules, lithium battery regulations, perfume and aerosol guidelines, and compliance requirements.
USPS Shipping Surcharges Explained: Peak Season and Beyond
Understand every USPS surcharge — peak season surcharges, nonstandard packaging fees, dimensional weight adjustments, and how to minimize extra costs.
USPS Insurance Claims: Step-by-Step Filing Guide
Learn how to file USPS insurance claims for lost, damaged, or missing contents — including required documentation, timelines, claim amounts, and tips for approval.
USPS Signature Confirmation vs Certified Mail
Understand the key differences between USPS Signature Confirmation and Certified Mail — when to use each, pricing, legal standing, and practical use cases.