What are the advantages of using a dedicated mailer class like Swift Mailer for sending emails in PHP?

When sending emails in PHP, using a dedicated mailer class like Swift Mailer can provide several advantages such as better handling of attachments, HTML content, and SMTP authentication. It also offers more robust error handling and support for various email protocols. 

// Example code using Swift Mailer to send an email
require_once 'vendor/autoload.php';

// Create the Transport
$transport = (new Swift_SmtpTransport('smtp.example.org', 25))
  ->setUsername('your_username')
  ->setPassword('your_password');

// Create the Mailer using your created Transport
$mailer = new Swift_Mailer($transport);

// Create a message
$message = (new Swift_Message('Wonderful Subject'))
  ->setFrom(['john.doe@example.com' => 'John Doe'])
  ->setTo(['receiver@example.com' => 'A name'])
  ->setBody('Here is the message body')
  ->addPart('<q>Here is the message body</q>', 'text/html');

// Send the message
$result = $mailer->send($message);

if ($result) {
    echo 'Email sent successfully!';
} else {
    echo 'Failed to send email.';
}

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