PostCheck 2

Download/Upgrade for Registered PostCheck Users

If you've recently purchased PostCheck or are a returning customer, fill in the form below to download the fully-functional version of PostCheck.
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Download the Demo

The PostCheck demo is time-limited and does not do group lookups. It should give you a chance to experiment with some of your addresses to see how it works. When you're ready to purchase PostCheck, click here.

Since PostCheck 2 drops support for Mac OS X 10.4 Tiger, I'm leaving the previous version available for download as well.

PostCheck 2.5 Demo — September 30, 2016
Requirements: Mac OS X 10.9 – 10.13.x.
Not compatible with macOS 10.14 Mojave. Apple has removed all support for Address Book plugins.

PostCheck 1.9.2 Demo — November 19, 2009
Requirements: Mac OS X 10.4 – 10.7.x