How do I correct this intermittent problem with iMessage? How do I "register" someone's phone number with iMessage?
MacBook Pro, OS X El Capitan (10.11.2)
Hey aggiedoc69,
I understand that you are having an issues with sending an iMessage to a friend of yours. Let's see if we can get this sorted out.
One thing to try is to delete the conversation that you have with this person and send a message to them in a new conversation. Take a look at the article for this and additional troubleshooting options. You might also want to suggest that your friend try these steps as well.
If you can‘t send or receive messages on your iPhone, iPad, or iPod touch
https://support.apple.com/en-us/HT204065
Take it easy
I tried everything you and the article suggested, and the problem is still there. It's not on my cell phone, just my MacBook Pro. I've had this same problem with it intermittently for quite a while. Suddenly when I try to message people I've messaged successfully in the past, they go undelivered. For whatever reason, it may work the next time I try it.
Hi aggiedoc69,
That typically takes care of those types of issues. At that point, it would be best to contact Apple Support. You can start the process by using the link below.
Contact Apple Support
https://www.apple.com/support/contact/
Have a good day
I am unable to send iMessage because the recipient's phone number is "not registered" even though I've successfully iMessaged the same phone number in the past week.
