: A comprehensive subscription-based service ($19.99/mo) ideal for frequent shippers. It allows you to print official USPS stamps directly onto envelopes and offers a free digital scale to new users .

: The official tool for individual users and small businesses . It is best for simple shipments using Priority Mail or Priority Mail Express . Note: It does not currently support First-Class or Ground Advantage for standard individual accounts .

Buying postage online allows you to skip post office lines and often access discounted "Commercial" rates not available at the counter . You can purchase everything from simple stamps to complex international shipping labels through official carrier websites or third-party "PC Postage" providers . Popular Platforms for Buying Postage

: Excellent for casual sellers on platforms like eBay or Etsy . It provides discounted rates without a monthly subscription fee .