Emoji Reactions
React to a message with an emoji instead of typing a reply.

1) Long-press a message
Long-press any message to open the reactions bar.
2) Pick a common reaction
Tap one of the quick emojis that appear.
3) Open the full picker
Tap + to see the full emoji picker.
4) Remove a reaction
Tap the same emoji again to remove your reaction.
tip
Reactions are a fast way to acknowledge a message without breaking the flow of a thread.