Playground
Pick an iMessage feature, read the request that sends it, and watch it land on a phone.
For demonstration only
The phone and its animations are sketches drawn on this page, not Messages itself. What your contact sees is what their own iPhone plays, which changes with the device and the iOS version, so send anything that has to be right to yourself first. Nothing here sends a real message.
Related
Message effects
Every effect, who sees it, and the threads an effect can be sent into.
Text and rich text
Formatting ranges, text effects and the subject line.
Reactions
Tapbacks: adding one, removing it, and what a contact's looks like.
chat_background.set
Every background preset, and a custom one from your own colours.