$to      = 'lalitworkmail@gmail.com';
$subject = 'the subject';
$message = 'hello';
$headers = 'From: lalitj003@gmail.com' . "\r\n" .
    'Reply-To: lalitj003@gmail.com' . "\r\n" .
    'X-Mailer: PHP/' . phpversion();

mail($to, $subject, $message, $headers);

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                        <p>Click on below link to start download </p>
                        <a href="https://sagaramlani.com/wp-content/free_gift/test.pdf">Start Download</a>
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