A test group is a reusable audience group that can be used as a recipient for test messages. After you create a test group, you can test your message against your test group. If you are satisfied with the results with your test group, just change the audience selection and send your live, production message.
By keeping a saved list of approved test users in Airship, you can be sure that your test messages only reach an approved, in-house list of users. You might limit your test group to company employees such as Product staff, Development team, etc.
You can create up to twenty test groups. Follow the steps in Manage Test Groups.