$mail->addCustomHeader($headerName, $headerValue);
setFrom('from@example.com', 'John Doe'); $mail->addAddress('to@example.com', 'Jane Doe'); $mail->Subject = 'Testing addCustomHeader function'; $mail->Body = 'Hello, this is a test email'; $mail->addCustomHeader('Reply-To', 'reply-to@example.com'); if(!$mail->send()) { echo 'Message could not be sent.'; echo 'Mailer Error: ' . $mail->ErrorInfo; } else { echo 'Message has been sent'; } ?>
setFrom('from@example.com', 'John Doe'); $mail->addAddress('to@example.com', 'Jane Doe'); $mail->Subject = 'Testing addCustomHeader function'; $mail->Body = 'Hello, this is a test email'; $mail->addCustomHeader('X-Mailer', 'My Custom Mailer'); if(!$mail->send()) { echo 'Message could not be sent.'; echo 'Mailer Error: ' . $mail->ErrorInfo; } else { echo 'Message has been sent'; } ?>In this example, the addCustomHeader function is used to add a custom X-Mailer header to the email. This header specifies the name of the mailer software that was used to send the email. Overall, PHPMailer is a package library that can be used with various PHP frameworks and platforms for sending emails effectively.