README

A Laravel mail transport using Gmail API with OAuth2 authentication. This package provides a secure alternative to SMTP for sending emails through Gmail.

Requirements

• PHP 8.0.2+
• Laravel 9.0, 10.0, 11.0, or 12.0
• A Google Cloud project with Gmail API enabled

Installation

Install the package via Composer:

composer require orange-soft/laravel-gmail-mailer

The package will auto-register its service provider.

Publish Configuration

php artisan vendor:publish --tag=gmail-mailer-config

Google Cloud Setup

1. Go to Google Cloud Console
2. Create a new project or select an existing one
3. Enable the Gmail API:
   • Navigate to "APIs & Services" > "Library"
   • Search for "Gmail API" and enable it
4. Create OAuth2 credentials:
   • Go to "APIs & Services" > "Credentials"
   • Click "Create Credentials" > "OAuth client ID"
   • Select "Desktop app" as the application type
   • Download the credentials JSON file
5. Save the credentials file:
   • Default location: storage/app/gmail/credentials.json
   • Or set a custom path via GMAIL_CREDENTIALS_PATH

Setup OAuth Token

Run the setup command to authenticate with your Google account:

php artisan os:gmail-mailer:setup

This will:

1. Display an authorization URL
2. Ask you to open the URL in your browser
3. Prompt you to enter the authorization code
4. Save the OAuth token for future use

Configuration

Environment Variables

Add to your .env file:

MAIL_MAILER=gmail-oauth2

# Optional: Custom paths for credentials and token
GMAIL_CREDENTIALS_PATH=/path/to/credentials.json
GMAIL_TOKEN_PATH=/path/to/token.json

# Optional: Application name shown in Google OAuth consent
GMAIL_APP_NAME="My Application"

# Optional: Default test recipient for the test command
GMAIL_TEST_RECIPIENT=test@example.com

# Optional: Logging
GMAIL_LOGGING_ENABLED=true
GMAIL_LOG_CHANNEL=stack

Mail Configuration

Add the Gmail mailer to your config/mail.php:

'mailers' => [
    // ... other mailers

    'gmail-oauth2' => [
        'transport' => 'gmail-oauth2',
    ],
],

Usage

Send Email via Laravel Mail Facade

use Illuminate\Support\Facades\Mail;
use App\Mail\WelcomeEmail;

// Send using the default mailer (when MAIL_MAILER=gmail-oauth2)
Mail::to('user@example.com')->send(new WelcomeEmail());

// Or explicitly use the Gmail mailer
Mail::mailer('gmail-oauth2')
    ->to('user@example.com')
    ->send(new WelcomeEmail());

Direct Service Usage

use Orangesoft\GmailMailer\Services\GmailService;

$gmail = app(GmailService::class);

$gmail->sendEmail(
    to: 'recipient@example.com',
    subject: 'Hello World',
    body: '<h1>Welcome!</h1><p>This is a test email.</p>',
    options: [
        'from' => 'sender@gmail.com',
        'fromName' => 'My App',
        'cc' => ['cc@example.com'],
        'bcc' => ['bcc@example.com'],
        'replyTo' => 'reply@example.com',
    ]
);

Commands

Setup OAuth

php artisan os:gmail-mailer:setup

# With custom paths
php artisan os:gmail-mailer:setup --credentials=/path/to/credentials.json --token=/path/to/token.json

Test Email

# Send a test email
php artisan os:gmail-mailer:test user@example.com

# With custom subject
php artisan os:gmail-mailer:test user@example.com --subject="Custom Subject"

# Check token status only (no email sent)
php artisan os:gmail-mailer:test --check-only

Token Refresh

The package automatically refreshes expired OAuth tokens. If the refresh token becomes invalid, re-run:

php artisan os:gmail-mailer:setup

Troubleshooting

Token Expired Error

If you see "Gmail OAuth token has expired and cannot be refreshed", run:

php artisan os:gmail-mailer:setup

Credentials Not Found

Ensure your credentials file exists at the configured path:

ls -la storage/app/gmail/credentials.json

Permission Denied

Check file permissions:

chmod 600 storage/app/gmail/token.json
chmod 600 storage/app/gmail/credentials.json

Check Configuration

Verify your setup:

php artisan os:gmail-mailer:test --check-only

Security

• OAuth tokens are stored with restricted permissions (0600)
• Credentials and tokens should be added to .gitignore
• Never commit credential or token files to version control

Add to your .gitignore:

storage/app/gmail/credentials.json
storage/app/gmail/token.json

License

This package is open-sourced software licensed under the MIT license.