PostCheck 2.4 for Mac was free to download from our software library. Our antivirus scan shows that this Mac download is malware free. The actual developer of this software for Mac is Brian Toth. The software lies within Internet & Network Tools, more precisely Browser extensions.
From the developer:
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.
You may want to check out more software for Mac, such as Arch, Opera Update Checker or AmazonSearch, which might be related to PostCheck.