How can using a mailer class like SWIFTMailer enhance email security and correctness in PHP applications?

Using a mailer class like SWIFTMailer can enhance email security and correctness in PHP applications by providing built-in features for sending emails securely through SMTP or other protocols, handling attachments, and preventing common vulnerabilities like header injection. It also helps in ensuring that emails are formatted correctly according to email standards, reducing the chances of them being marked as spam. 

// Include the Composer autoloader
require 'vendor/autoload.php';

// Create a new instance of Swift Mailer
$mailer = new Swift_Mailer(new Swift_SmtpTransport('smtp.example.com', 587));

// Create a message
$message = (new Swift_Message('Subject'))
    ->setFrom(['john.doe@example.com' => 'John Doe'])
    ->setTo(['jane.smith@example.com' => 'Jane Smith'])
    ->setBody('This is a test email sent using SWIFTMailer.');

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

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

Keywords

SWIFTMailer email security correctness PHP applications mailer class

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