For now, you can enjoy using Mailbird on a Windows desktop.
However, watch this space: this year, we'll be making a public announcement about a brand new cross-platform application (currently under development). Early access will be exclusively provided to our customers.
Although we plan on providing routine updates on Mailbird 2.0 (our current product), only the cross-platform experience of Mailbird Next (i.e. for Mac, Windows, and mobile) will be available on our new platform (scheduled to be released this year).
If you'd like to sign up for early access and an exclusive offer, please visit www.getmailbird.com and select "Mailbird for Mac" at the top of the page, and enter your email address to become a part of this new journey with Mailbird Next!
Download Mailbird for free here