How can one ensure that the SMTP configuration is correct when using PHPMailer for sending emails?

To ensure that the SMTP configuration is correct when using PHPMailer for sending emails, you should double-check the SMTP host, port, username, password, and encryption method being used. Make sure that the credentials are accurate and that the SMTP server is accessible from your hosting environment. Additionally, you can enable debugging in PHPMailer to get more detailed error messages if the emails are not being sent successfully. 

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

$mail = new PHPMailer(true);

try {
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->SMTPAuth = true;
    $mail->Username = 'your_smtp_username';
    $mail->Password = 'your_smtp_password';
    $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
    $mail->Port = 587;

    // Enable verbose debug output
    $mail->SMTPDebug = SMTP::DEBUG_SERVER;

    $mail->setFrom('from@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 sent using PHPMailer';

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

Keywords

PHPMailer SMTP configuration email sending error handling debugging

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