Joke Collection Website - Blessing messages - How can I be sure that the Apple SMS was sent to someone else and the other party received it?

How can I be sure that the Apple SMS was sent to someone else and the other party received it?

It is true that Apple sends pictures to others, and the setting method received by the other party is as follows:

1. Open Settings and click Info.

2. Find "Send Read Receipt" and enable this function.

3. After setting, you can know whether the short message sent has been received by the other party. If it is not received by the other party, the background of the short message box is green.