Garmin Check In Messages. Garmin Support inReach® Adding Contact Information for Checkin or From the Device tab in the app, select Check-In > Edit Check-in Contacts Support Center Aviation Support Marine Support Navionics Support.
Garmin United States Aviation Support from support.garmin.com
Their promisses they are free for low budget plans did not work out apparently and they try to cut the use down by making preset useless and thus obsolete. This is done from the Garmin Explore™ website or in the Garmin Messenger™ app, under "Edit Check-in Contacts" (depending upon your device)
Garmin United States Aviation Support
In the old Preset scheme you could edit the three messages that could be sent for free, while the new Check-in messages could not be modified From the home page, press OK to open the home page actions. You can use the Garmin Messenger™ app to customize recipients
Garmin inReach® Messenger. Note: Check-in messages cannot be sent via the Earthmate™ app Support Center Aviation Support Marine Support Navionics Support.
Sending Text Responses Directly from your Garmin EDGE or Garmin Watch. Garmin Support Center is where you will find answers to frequently asked questions and resources to help with all of your Garmin products. Support Center Aviation Support Marine Support Navionics Support