If you're looking to Download Garmin Messenger™ on your Chromebook laptop Then read the following guideline.

Never lose touch with friends and family. Enjoy the security and connectivity of global messaging with the Garmin Messenger™ app. Pair with your compatible inReach® satellite communicator for fast, easy direct messaging and interactive SOS that’s not limited to cellphone coverage areas (active satellite subscription required). The app supports group messaging as well as direct communication with individuals. Automatic switching between Internet, cellular and satellite networks gives you the best connectivity and efficiency for all your messaging. When you have connectivity, the app will work seamlessly even if your inReach device is turned off. Invite your friends and family to download the app to stay connected and keep the conversation going on and off the trail. Note: Some jurisdictions regulate or prohibit the use of satellite communication devices. It is the responsibility of the user to know and follow all applicable laws in the jurisdictions where the device is intended to be used. See compatible devices here: garmin.com/p/893837#devices