Mercury Messenger is a free application for the Apple Macintosh. Mercury Messenger is an advanced email client with tons of features that allow you to manage your mail. It includes such advanced features as online calendars, address book, contacts, address book, task manager, instant messages, and more. As a free application, Mercury Messenger can be downloaded by anyone. To download Mercury Messenger, you can follow these steps: First, install QuickTime Player, if you don't already have it installed. Download the free version of Mercury Messenger. Next, click on Mercury Messenger icon and then click "get it now". The program will ask for your computer's MAC address. Then, the application will request your payment information. Once you've entered your payment information, the application will download the program files and save them in your Applications folder on your Macintosh. After the application has downloaded and installed, you can now open Mercury Messenger from the Dock or in the menu bar. You will notice that the Mercury Messenger icon now is located at the upper right-hand corner of your Mac's screen. Simply drag Mercury Messenger icon onto your desktop. You should now see the Mercury Messenger icon. Now all you need to do is to open the Mercury Messenger application and go about your daily activities. If you are working on Mercury Messenger at any time, you can easily switch between your email inbox, your task manager, and other application features by simply clicking the Mercury Messenger icon, and dragging it anywhere on your desktop. Mercury Messenger is truly a great free application!