Start in test mode
An owner or admin opens the Admin Center, Phone, Numbers, Messaging and adds a number: a name, the channel texts go to, and the number customers text. It starts in test mode, where nothing goes to or comes from the phone network. Type a message under Send a test text and it lands in the channel from a made-up number, like a customer's text would. Reply in the thread as usual: the reply is kept and marked Test mode: not sent.

