Message with an animation, usually in the form of GIF or soundless video.
Audio messages (deprecated).
Image (picture) message.
Animated GIF images must use
Message that is mainly one specific link, or a text message with one link preview.
Status from a user in a chat, usually typing and uploading.
Pictures sent with few text caption, usually a transparent background, and a limited number of options that is usually not from the user’s photo gallery.
Any type of message that is not listed above. A text representation is required.
Voice messages, usually recorded right before sending.