FastMail 1.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application is a product of FastMail Pty Ltd. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The application is categorized as Communication Tools.
From the developer:
This application lets you use FastMail on your iPhone, iPad, iPod, or Android device. The program pins important messages to the top of your Inbox for instant access. It allows you to search your entire e-mail archive in seconds. You can schedule meetings, respond to invitations, and look up contacts with just a few taps.
You may want to check out more software for Mac, such as Clean Email or Singlebox, which might be related to FastMail.