How can I send an SMS message from my Mac?
Solution 1:
This is called Text Message Forwarding and requires iOS 8.1 or above. Make sure both the OS X Messages App and your iPhone have the same Apple ID enabled. Then, do the following:
- On your iPhone, tap Settings > Messages.
- Tap Text Message Forwarding.
- Enable your Mac in the list of devices.
- On your Mac, open Messages.
- A six-digit activation code appears.
- Enter this code on your iPhone, then tap Allow.
That should just about do it.