How to send eFax fax through PHP? - php

Question

I am trying to send a fax via the eFax service. As I understand, this should be as easy as sending a simple email to the specific address.
I use PHPMailer for emails. Ordinary emails are sending fine. Even when I send to an efax address $mail->send returns true, that means that the email was sent seccessfully, but the recipient didn't receive the fax.
Any suggestions?
Thank you.
function sendFax($fax, $msg) {
$efax_number = $fax . "#efaxsend.com";
$mail = new PHPMailer;
$mail->CharSet = 'UTF-8';
$mail->SMTPDebug = 3;
$mail->isSMTP();
$mail->Host = EMAIL_HOST; // Set mailer to use SMTP
$mail->SMTPAuth = true; // Enable SMTP authentication
$mail->Username = EMAIL_SMTP_USERNAME;
$mail->Password = EMAIL_SMTP_PASSWORD; // SMTP password
$mail->SMTPSecure = 'tls'; // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587;
//From email address and name
$mail->From = "orders#orderapp.com";
$mail->FromName = "Test";
//To address and name
$mail->addAddress($efax_number); // SEND EMAIL TO USER
//Send HTML or Plain Text email
$mail->isHTML(false);
$mail->Subject = ' New Order Fax ';
$mail->Body = $msg;
$mail->AltBody = "Sample";
$result = $mail->send();
if (!$result)
{
...
}
else
{
...
}
}