Change Paid Memberships Pro Email Subjects

gistfile1.php

/*
	Change email subjects.

	The function checks $email->template and updates the subject as needed.   

	The email template name will be equivalent to the filenames in the /email/ folder of the PMPro plugin.  
*/
function my_pmpro_email_subject($subject, $email)
{		
	//only checkout emails
	if($email->template == "checkout_free")
	{
		$subject = "Thank you, " . $email->data["name"] . ", for using " . get_bloginfo("name");
	}
 
	return $subject;
}
add_filter("pmpro_email_subject", "my_pmpro_email_subject", 10, 2);