Thank you for your review
10.00 $10 00

Have a question about PostCheck? Need an alternative?

PostCheck is a plugin for Apple's Address Book that provides an efficient, one-click way to lookup missing ZIP+4 Codes, Cities and States and will format addresses to meet USPS standards. Also provides Group Lookups.

What's New

Version 2.5:

Note: Now requires OS X 10.9 or later running on a 64-bit Intel processor

  • New Gatekeeper-compatible installer app, rather than a simple command-line tool
  • Now distributed on a macOS 10.12 Sierra-compatible signed disk image, rather than a ZIP file; required because of Gatekeeper's new Path Randomization security feature
  • Worked around a bug in


  • OS X 10.5 or later
  • Apple's Address Book
  • Works with US addresses only

Similar Software

Suggest other similar software
Create a collection and add  to it.
Like this app? Be the first to add it to a collection! Create a Collection by bringing together complementary apps that have a common theme or purpose, then share it and discover new collections! + Create a Collection

PostCheck User Discussion

5 4


Current Version (2.x)


Downloads 5,110
Version Downloads 86
License Demo
Date 30 Sep 2016
Platform Intel 64 / OS X
Price $10.00
To leave a comment, you need to be logged in.
Sort by: Time | Smiles
MacUpdate Promo