With Stamps.com, you have all the functions of the Post Office™ right on your desktop—including purchasing postage. We make it easy to send a letter by printing USPS postage, a delivery address and a return address directly to your envelope. Stamps.com even checks your delivery address against the master USPS database, eliminating the hassle of letters being sent to an incorrect or undeliverable address.
And when you print First Class Mail postage for a letter using Stamps.com, you automatically qualify for a postage discount that is not available at the Post Office. The USPS provides access to the “Metered Mail Rate” for all online postage vendors. The Metered Mail Rate is currently five cents cheaper than the First Class Mail rate at the Post Office (currently $0.55).
If the preview looks good, load your envelope into your printer and click “Print Postage.” (If there’s a problem with printing, it’s fast and easy to reprint at no extra charge!) Once your envelope has been printed, the postage value will be deducted from your Stamps.com account balance.