Download of PrintEnvelope 2.3.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The following version: 1.4 is the most frequently downloaded one by the program users.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The program lies within Productivity Tools, more precisely Timekeeping. This application's bundle is identified as com.goldbugsoft.PrintEnvelope. This Mac application is an intellectual property of Goldbug Software.
From the developer:
PrintEnvelope is an utility for printing a address on a envelope. Only name, ZIP and address is necessary for the envelope printing. You create a address book such like a Excell sheet, or import a CSV file which is created by Excell or Numbers. And you can do "Drag&Drop" from Apple Address Book name column. And there's preview in the widow that you enter addresses. you can see a printing image while you enter addresses by the prevew.
You may want to check out more Mac applications, such as Address Book Scrubber, Quote of the Day or Opera Clock, which might be related to PrintEnvelope.