WHMCS SendEmail to someone non registered email address to our site

[jayminzap]

Hello,
I know what this method does:

$mail = sendMessage("Share Document", $id, ['share' => $share]);

 

Where 1st paramter is email template name , second is ID to which we want to send and third are custom parameters values.

 

I have question is there any way where we can send email to someone who is not registered on our site.

Like I tried giving this:

$mail = sendMessage("Share Document", ''xyz@gmail.com', ['share' => $share]);

But it didn't allowed me to send.

 

Any possible solution to this?

 

TIA