title: Slack POST multiple messages to a channel at once
body: <p>I need to post multiple bot replies (responses determined dynamically) to the same channel.
  The obvious way seems to be to do an HTTP POST for each message in succession using this API method: <a href="https://api.slack.com/methods/chat.postMessage" rel="noreferrer">https://api.slack.com/methods/chat.postMessage</a></p>
  
  <p>Is there a way to send messages to Slack in bulk to post to the same channel? The order in which the messages get rendered need not be important for me.</p>