How do I know if my message has been delivered?

A message will slightly change color after being successfully sent. If it was sent using satellite data, you'll see a small satellite icon beside the message (this applies for outgoing and incoming messages). If the message was sent using Wifi or Cell, the message won't have any icons beside it.

If your message was not successfully delivered you will see an error message that says "Not delivered" with a red exclamation point. If you select the message, you have the option to Resend, Delete, or Cancel. If you don't see the error, your message was sent successfully and you can rest assured that the other party will receive your message.