Ambrosia Software has updated EasyEnvelopes (http://www.AmbrosiaSW.com/utilities/easyenvelopes/), a free Mac OS X widget for Dashboard for envelop printing, to version 1.0.9. The upgrade provides various bug fixes and tweaks.
EasyEnvelopes allows you to create envelopes from the Dashboard. You can use whatever typefaces you choose for your mailing and return addresses, control the color of the text, and even use a graphic for a return address. EasyEnvelopes will also optionally print USPS postal bar codes for both 5 digit and 9 digit zip codes. It works with Mac OS X 10.4 and higher.