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Email Notifications in GitHub Actions

1. Introduction

Email notifications in GitHub Actions allow you to inform stakeholders about important events in your CI/CD pipeline. This lesson will guide you through the setup process to ensure your team stays updated.

2. Key Concepts

  • GitHub Actions: A continuous integration and continuous deployment (CI/CD) service that automates your workflow.
  • Actions: Custom applications that can be combined to create workflows.
  • Workflows: Defined processes that automate tasks, triggered by events like push, pull request, etc.
  • Notifications: Alerts sent via email when specific conditions are met in a workflow.

3. Step-by-Step Setup

3.1 Create a Workflow File

Start by creating a new workflow file in your GitHub repository:

name: Notify on Push

on:
  push:
    branches:
      - main

jobs:
  notify:
    runs-on: ubuntu-latest
    steps:
      - name: Send Notification
        uses: dawidd6/action-send-mail@v3
        with:
          server_address: smtp.gmail.com
          server_port: 465
          username: ${{ secrets.EMAIL_USERNAME }}
          password: ${{ secrets.EMAIL_PASSWORD }}
          subject: 'New push to main branch'
          body: 'A new commit has been pushed to main.'
          to: 'recipient@example.com'
          from: 'sender@example.com'
          secure: true
        

This YAML file configures a GitHub Action that sends an email notification whenever a push is made to the main branch.

3.2 Configure Secrets in GitHub

Store your email credentials as secrets in your GitHub repository settings:

  • Navigate to your repository on GitHub.
  • Go to 'Settings' > 'Secrets and variables' > 'Actions'.
  • Add the following secrets:
    • EMAIL_USERNAME
    • EMAIL_PASSWORD

    3.3 Testing Your Workflow

    Push a change to your main branch to trigger the workflow. Check the recipient's inbox for the notification.

    4. Best Practices

    • Use environment variables for sensitive data.
    • Limit email notifications to significant events to avoid spamming users.
    • Test your email sending in a safe environment before deploying.
    • Customize email content to include useful information for recipients.

    5. FAQ

    What email services can I use?

    You can use any SMTP server, such as Gmail, Outlook, or custom SMTP services.

    Can I send notifications to multiple recipients?

    Yes, you can separate email addresses with commas in the 'to' field.

    What if my emails are going to spam?

    Ensure that your domain has proper SPF and DKIM records set up to improve deliverability.