Download Kestrel

Version 1.0.0, released on October 30, 2026. It needs macOS 15.0 or later, and installs its own updates after this one.

Download for Mac (34.7 MB) How to install it

Open it and pick “Explore the demo inbox” to try it with made-up mail. Connecting your own account needs a license. What’s new is in the changelog.