How can debugging techniques be implemented to troubleshoot issues with sending HTML emails using PHP?

To troubleshoot issues with sending HTML emails using PHP, one can implement debugging techniques such as checking for syntax errors in the PHP code, ensuring that the email headers are set correctly, and verifying that the HTML content is properly formatted. Additionally, using error logging functions like error_log() can help identify any issues with the email sending process. 

<?php
$to = "recipient@example.com";
$subject = "Test HTML Email";
$message = "<html><body><h1>Hello, this is a test HTML email!</h1></body></html>";
$headers = "MIME-Version: 1.0" . "\r\n";
$headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";
$headers .= "From: sender@example.com" . "\r\n";

if (mail($to, $subject, $message, $headers)) {
    echo "Email sent successfully!";
} else {
    echo "Email sending failed.";
}
?>

Keywords

PHP debugging HTML emails troubleshooting error types

Related Questions