Stamps.com today announced the launch of PhotoStamps for Mac OS X Tiger. PhotoStamps, the popular form of postage that lets consumers turn their digital photos, designs or images into valid U.S. postage, is now available as a standalone application that integrates the design and order process with images in the users’ iPhoto library. PhotoStamps can be used as regular postage to send letters, postcards or packages and are currently available for the most common mail rates in denominations ranging from US$0.23 to $3.85. Each sheet includes 20 individual PhotoStamps. PhotoStamps will be available later this month.