Thanks for reaching out in Apple Support Communities. I understand that you'd like to know about the messages you're receiving regarding the recipient of a message reacting to a message you've sent. I can see why you'd reach out for this information; I can help. What you're seeing is part of the message effects that are included with iMessage on your device. The text you receive describing the reaction occurs when someone does the following:
Use message effects with iMessage on your iPhone, iPad, and iPod touchRespond to a message with expressions
With Tapback, you can quickly reply to messages with expressions, like a thumbs up or a heart. To reply to a message with a Tapback, follow these steps:
- Open a conversation in Messages.
- Double-tap the message bubble or photo that you want to respond to.
- Select the Tapback that you want to send.
You can also use Tapback in group messages. To see who replied with a Tapback, tap it.
Best Regards.

