title: How to send a message in the Slack channel using Flutter?
body: <p>I am creating an attendance app in which if an employee got the approval on leave request, then the app should send a message in the Slack channel.</p>
  
  <p>I have seen this flutter package on the pub but it is not very helpful:-</p>
  
  <p><a href="https://pub.dev/packages/flutter_slack_oauth" rel="nofollow noreferrer">https://pub.dev/packages/flutter_slack_oauth</a></p>
  
  <p>Any idea on how I can send a message in the Slack channel using Flutter?</p>