What are common reasons for PHPMailer not sending emails, even without error messages?

Common reasons for PHPMailer not sending emails without error messages include incorrect SMTP settings, server configuration issues, or being flagged as spam by the recipient's email provider. To solve this issue, double-check the SMTP settings, ensure the server allows outgoing mail, and consider adding proper authentication methods to avoid being marked as spam. 

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

$mail = new PHPMailer(true);

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

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

    $mail->isHTML(true);
    $mail->Subject = 'Test Email';
    $mail->Body = 'This is a test email';

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

Keywords

PHPMailer email sending error messages SMTP authentication

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