GitHub Action to notify a Slack Channel when a PR is *merged*

SlackNotification.yml

name: Notify Slack via Email on PR Merge

on:
  pull_request:
    branches: [ main ]
    types:
      - closed

jobs:
  notify:
    if: github.event.pull_request.merged == true # Only run if PR is merged
    runs-on: ubuntu-latest
    steps:
      - name: Send Slack Notification
        uses: slackapi/slack-github-action@v1
        with:
          channel-id: "your-slack-channel-goes-here"
          slack-message: "📝 PR #${{ github.event.pull_request.number }}: *${{ github.event.pull_request.title }}* : Created by ${{ github.event.pull_request.user.login }}"
        env:
          SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}