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);

This recipe is included in the blog post on "Changing PMPro Email Subjects" at Paid Memberships Pro here: https://www.paidmembershipspro.com/changing-pmpro-email-subjects/