Send a discussion message

Post a new message into an existing discussion, in its original channel.

Adds a new message to an existing discussion. The message is posted in the original channel (Slack thread reply or email reply) and recorded against the discussion in Plain.

For TypeScript, the GraphQL SDK gives you a fully typed client for these operations.

Mutation

mutation sendThreadDiscussionMessage($input: SendThreadDiscussionMessageInput!) {
  sendThreadDiscussionMessage(input: $input) {
    threadDiscussionMessage {
      id
      threadDiscussionId
    }
    error {
      message
      type
      code
      fields {
        field
        message
        type
      }
    }
  }
}

Variables

{
  "input": {
    "threadDiscussionId": "td_01HXXXXXXXXXXXXXXXXXXXXXXX",
    "markdownContent": "Following up on this — any update?"
  }
}