// Include the Postal library
const Postal = require('@atech/postal').default; // CommonJS
// OR
import Postal from '@atech/postal' // ES6 import

// Create a new Postal client using a server key generated using your installation's web interface
const client = new Postal({
    hostname: 'https://postal.yourdomain.com',
    apiKey: 'your-api-key',
});

// This must be in an async function
try {
    // Send a new message
    const message = await client.sendMessage({
        // Set the subject
        subject: 'Hi there!',
        // Specify who the message should be from - this must be from a verified domain on your mail server
        from: 'test@test.postal.io',
        // Add some recipients
        to: ['john@example.com', 'mary@example.com'],
        cc: ['mike@example.com'],
        bcc: ['secret@awesomeapp.com'],
        // Set the content for the e-mail
        plain_body: 'Hello world!',
        html_body: '<p>Hello world!</p>',
        // Add any custom headers
        headers: {
            'X-PHP-Test': 'value',
        },
        // Attach any files
        attachments: [
            {
                content_type: 'text/plain',
                data: Buffer.from('Hello world!').toString('base64'),
                name: 'textmessage.txt',
            },
        ],
    });

    // Do something with the returned data
    console.log(message);
} catch (error) {
    // Handle the error
    console.log(error);
}