In cases where emails sent through PHP are not reaching recipients, what steps can be taken to troubleshoot and resolve the issue?

When emails sent through PHP are not reaching recipients, it could be due to various reasons such as misconfigured mail server settings, spam filters blocking the emails, or incorrect email headers. To troubleshoot and resolve the issue, you can check the mail server logs for error messages, ensure that the email headers are properly set, and verify that the recipient's email address is correct. 

// Example PHP code snippet to troubleshoot email sending issues

// Set the recipient email address
$to = "recipient@example.com";

// Set the subject of the email
$subject = "Test Email";

// Set the message body
$message = "This is a test email sent through PHP.";

// Set additional headers
$headers = "From: sender@example.com\r\n";
$headers .= "Reply-To: sender@example.com\r\n";

// Send the email
if (mail($to, $subject, $message, $headers)) {
    echo "Email sent successfully.";
} else {
    echo "Failed to send email. Check server logs for more information.";
}

Keywords

SMTP email delivery SPF DKIM email headers

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