Debug phpmailer gmail

The joys of debugging PHPMailer with Gmail!

Here are some common issues and solutions to help you troubleshoot:

1. Authentication issues

• Make sure you have the correct Gmail username and password.
• Ensure that your Gmail account is not set to "Less secure app access" (Settings > Accounts > Less secure app access). This can be a security risk, but it's required for PHPMailer to work.
• If you're using 2-Step Verification, generate an App Password and use that instead of your regular password.

2. SMTP connection issues

• Check that your SMTP server is set correctly: SMTPHost = 'smtp.gmail.com'; and SMTPPort = 587; (or 465 for SSL/TLS).
• Ensure that your PHP script has permission to connect to the SMTP server. You can try setting SMTPAuth = false; to see if it's an authentication issue.

3. SSL/TLS issues

• If you're using SSL/TLS, make sure you have the correct certificate path: SMTPSecure = 'ssl'; or SMTPSecure = 'tls';.
• Check that your PHP version supports SSL/TLS. You can try upgrading to a newer version or using a different PHPMailer version.

4. Email content issues

• Verify that your email content is properly formatted and encoded. You can try using a tool like Mailhog to inspect the email content.
• Check that your email headers are correct. You can use a tool like mailhog or swaks to inspect the email headers.

5. PHPMailer configuration issues

• Review your PHPMailer configuration settings to ensure they're correct. You can try setting Debuglevel = 2; to get more detailed error messages.
• Check that your PHPMailer version is compatible with your PHP version.

6. Firewall or network issues

• Check that your firewall or network settings are not blocking the SMTP connection.
• Try using a different SMTP server or a different Gmail account to see if the issue persists.

7. PHPMailer version issues

• Make sure you're using a compatible version of PHPMailer. You can check the PHPMailer documentation for supported PHP versions.
• Try updating to the latest PHPMailer version to see if the issue is resolved.

8. Gmail account issues

• Check that your Gmail account is not suspended or blocked.
• Try sending an email using a different Gmail account or a different email provider to see if the issue persists.

Here's an example of a basic PHPMailer configuration:

<?php
require_once 'PHPMailer/PHPMailer.php';
require_once 'PHPMailer/SMTP.php';

$mail = new PHPMailer\PHPMailer\PHPMailer();
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->Port = 587;
$mail->SMTPAuth = true;
$mail->Username = '[email protected]';
$mail->Password = 'your_password';
$mail->SMTPSecure = 'ssl';
$mail->setFrom('[email protected]', 'Your Name');
$mail->addAddress('[email protected]', 'Recipient Name');
$mail->Subject = 'Test email';
$mail->Body = 'This is a test email';

if (!$mail->send()) {
    echo 'Error: '. $mail->ErrorInfo;
} else {
    echo 'Email sent!';
}
?>

Remember to replace the placeholders with your actual Gmail credentials and email content.