imessage
Text messages are undelivered from MacBook Air but go through from iPhone. My addresses and phone number are all correct in preferences to send and receive.
Text messages are undelivered from MacBook Air but go through from iPhone. My addresses and phone number are all correct in preferences to send and receive.
Hey there,
Try these steps first
After trying each step below, try to send a message again.

If you see ‘This user is not registered with iMessage’
If you try to send a message and see an alert that the person isn’t registered with iMessage, the message is trying to send using SMS/MMS. Make sure Text Message Forwarding is set up and your iPhone is powered on.
If your contacts see your email instead of your phone number
If you can send messages but your contacts see your email address instead of your phone number, make sure that you're signed in to iMessage with the same Apple ID on all your devices. Learn how to add your phone number to Messages on your Mac.

Hey there,
Try these steps first
After trying each step below, try to send a message again.

If you see ‘This user is not registered with iMessage’
If you try to send a message and see an alert that the person isn’t registered with iMessage, the message is trying to send using SMS/MMS. Make sure Text Message Forwarding is set up and your iPhone is powered on.
If your contacts see your email instead of your phone number
If you can send messages but your contacts see your email address instead of your phone number, make sure that you're signed in to iMessage with the same Apple ID on all your devices. Learn how to add your phone number to Messages on your Mac.

imessage