I'm a PowerAutomate novice, trying to resolve a request from a colleague who runs a Slack channel. When somebody joins the Slack channel, she wants their email address to be captured from Slack and added to an Excel spreadsheet which would ideally be stored in Teams or Sharepoint - or OneDrive if necessary. I've seen 3rd-party apps that can enable this, but we'd prefer to use PowerAutomate. Does anybody know if it's possible, please? I had a quick look, and although there's a Slack connector, the only trigger I can see is "When a file is created"