EasyEnvelopes is a Dashboard widget that helps you quickly print an one-off envelope, or utilize its tight integration with Address Book which allows you to quickly find a person's address to print an envelope for. It handles USPS bar codes for both 5 and 9 digit bar codes, and boasts many time-saving nicities. The software is fully localizable (works with any country's address format), and allows users to customize the envelope size, return address, mailing address, and more.