WorkflowComms provides an interface between GitHub Actions and any messaging platform.
WorkflowComms works by acting as a proxy between GitHub Actions and a messaging provider.
For example, if you want to pause in the middle of a deployment workflow and have an administrator manually confirm that they want the deployment to go ahead, WorkflowComms can handle proxying that confirmation back and forth between your running action and, for example, Slack or Twilio.
Likewise, if you simply want to send a message to a messaging provider, WorkflowComms can do this, as well (although that's usually also possible without WorkflowComms using just curl in an action).