This page describes concepts and terms mentioned in the Developer’s Guide.

Request Item: represents the digital content and settings which will result in the fulfillment of a physical letter delivered to its recipient.

Request: a container for one or more Request Items. A successful execution of one of PostalMethods “Send” Webservices will result in a new Request with one or more Request Items.

Paper: refers to a physical sheet of paper.

Page: refers to a printed side of a sheet of paper.

Simplex: printing on a single side of a sheet of paper.

Duplex: printing on both sides of a sheet of paper.

For example: duplex printing on a single paper results in a count of two pages.

Address Verification: every delivery address mailed to the United States must be verified before being fulfilled. Verification is done according to the United States Postal Service’s Coding Accuracy Support System (CASS) and Delivery Point Validation (DPV) standards.

Send Letters
Securely + Reliably
Send letters securely and reliably from any business application. Use for invoices, quotes, and other important business communications. Enjoy special web-form to postal features and instant notifications.
Simple Process
Easy as 1-2-3
Experience the ease of our streamlined process - developed for efficiency! You submit your document by email or API. We automatically print, collate, insert, and stamp your letter. Your letter is delivered via standard postal service.
Pay As You Go
No Fuss. No Obligations.
Register for free with no obligations! Evaluate the service as long as you need. Once you are ready, set up our user-friendly pay-as-you option to use our service. No fuss. No on-going commitment. Just plain easy!