Sending and Formatting Messages
Compose and send a message.
Type in the message box at the bottom of a conversation and select Send. Your message appears immediately for everyone in the conversation.
Formatting and attachments
The composer includes a formatting toolbar with bold, italic, strikethrough, inline code, and links, plus controls to attach files and insert an emoji.
Changing a message
Hover over one of your own messages to Edit message or Delete message.