What best practices should be followed when choosing between the mail() function and a PHP mailer class for sending emails in PHP applications?

When choosing between the mail() function and a PHP mailer class for sending emails in PHP applications, it is generally recommended to use a PHP mailer class for more advanced features, better error handling, and improved security. PHP mailer classes like PHPMailer or Swift Mailer provide a more robust and flexible solution for sending emails compared to the basic mail() function. 

// Example of sending an email using PHPMailer
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php'; // Include PHPMailer autoload file

$mail = new PHPMailer(true); // Create a new PHPMailer instance

try {
    $mail->isSMTP(); // Set mailer to use SMTP
    $mail->Host = 'smtp.example.com'; // Specify main and backup SMTP servers
    $mail->SMTPAuth = true; // Enable SMTP authentication
    $mail->Username = 'your@example.com'; // SMTP username
    $mail->Password = 'yourpassword'; // SMTP password
    $mail->SMTPSecure = 'tls'; // Enable TLS encryption, `ssl` also accepted
    $mail->Port = 587; // TCP port to connect to

    $mail->setFrom('from@example.com', 'Your Name');
    $mail->addAddress('recipient@example.com', 'Recipient Name');

    $mail->isHTML(true); // Set email format to HTML
    $mail->Subject = 'Subject of the Email';
    $mail->Body = 'Body of the Email';

    $mail->send();
    echo 'Email has been sent';
} catch (Exception $e) {
    echo 'Message could not be sent. Mailer Error: ', $mail->ErrorInfo;
}

Keywords

mail() PHP mailer class email sending PHP applications best practices

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