How can the issue of "550-Requested action not taken: mailbox unavailable550 Insufficient security or privacy level" be resolved when sending emails through PHPMailer and GMX?

To resolve the issue of "550-Requested action not taken: mailbox unavailable550 Insufficient security or privacy level" when sending emails through PHPMailer and GMX, you need to make sure that your GMX account settings are correctly configured to allow access from external applications. This error typically occurs when the security settings on the GMX account are too strict and prevent PHPMailer from sending emails. You may need to adjust the security settings on your GMX account or use an alternative email service provider that allows for external application access. 

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

$mail = new PHPMailer(true);

try {
    $mail->isSMTP();
    $mail->Host = 'smtp.gmx.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your_email@gmx.com';
    $mail->Password = 'your_password';
    $mail->SMTPSecure = 'tls';
    $mail->Port = 587;

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

    $mail->isHTML(true);
    $mail->Subject = 'Test Email';
    $mail->Body = 'This is a test email sent through PHPMailer and GMX.';

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

Keywords

PHPMailer GMX SMTP email sending mailbox unavailable

Related Questions