|String||Yes||Token of the user on whose behalf the message is being sent|
|String||Yes||Identifier of the user to whom the message is to be sent|
|String||Yes||Text of the message|
|String||No||FlockML alternative to message text. If present this will be shown instead of message text.|
|String||No||Notification to be shown for the message. If not present, |
An array of user identifiers indicating users who have been mentioned in the message.
|SendAs||No||Use this field if you want to display another name and image as the sender.|
An array of attachments. Any rich content to be included with the message is sent as an attachments.
|String||No||Needed when a bot (using a bot token) needs to send a message into a sends a message to a channel. Set its value to the id of the user on whose behalf the bot is sending a message – this must be a user who has installed the app, is a member of the channel, and can post messages to the channel. Since bots cannot join channels right now, the user whose id is provided in |
|Array||No||Use this to display the message to a limited number of members in a channel. Its value should be an array of user ids.|