Is Mixmax available for Safari, Firefox, and other web browsers?

At the moment, Mixmax is available as an extension for Google Chrome. 

Some of our customers enjoy using Gmail in another browser (like Safari or Firefox) while using the Mixmax native app. The native app is a companion to the Chrome extension, and it enables you to keep a close eye on your Live Feed and compose new messages using a keyboard shortcut, Command + Control + M. You can check out the native app at