Hey folks! bengotow here—the linux version is /almost/ ready, though the debian and rpm packages above should work. I'm working with some folks at Canonical to get the app packaged as a Snap (Snapcraft.io) so that Linux users will finally get autoupdates and I can ship a single format to everyone. Back when I worked on Nylas Mail, we had a ton of trouble with Linux because users would download a .deb or .rpm and then never update it, so I was hoping to stop distributing those entirely.

Feel free to grab the version from the link above, just come back and switch to the auto-updating snap when it's ready!