Paid Memberships Pro - Disable Billing Email Templates based on User Setting

pmpro_disable_billing_notifications.php

<?php
/*********************************************
 * ADDON - Add user meta to profile pages
 * Adds option to disable PMPro invoice/billing emails
 * 
 * OVERRIDE - Disable PMPro billing emails per user
 * Disable billing emails if user meta gfc_disable_billing_notice = Yes
 ********************************************/
add_action( 'show_user_profile', 'gfc_pmpro_membership_disable_billing' );
add_action( 'edit_user_profile', 'gfc_pmpro_membership_disable_billing' );
function gfc_pmpro_membership_disable_billing( $user ) { 
    
    //only give right users access
    $membership_level_capability = apply_filters("pmpro_edit_member_capability", "manage_options");
    if ( current_user_can( $membership_level_capability ) ) {
    ?>
 
    <h3>Disable Membership Billing Notifications</h3>
 
    <table class="form-table">
 
        <tr>
            <th><label for="gfc_disable_billing_notice">Disable?</label></th>
 
            <td>
                <select name="gfc_disable_billing_notice" id="gfc_disable_billing_notice" >
                    <option value="" <?php selected( '', get_the_author_meta( 'gfc_disable_billing_notice', $user->ID ) ); ?>>No</option>
                    <option value="Yes" <?php selected( 'Yes', get_the_author_meta( 'gfc_disable_billing_notice', $user->ID ) ); ?>>Yes</option>
                </select>
                <span class="description">Please choose Yes to disable all billing notices for this account</span>
            </td>
        </tr>
 
    </table>
    <?php }
}
//saving...
add_action( 'personal_options_update', 'gfc_save_pmpro_membership_billing_account' );
add_action( 'edit_user_profile_update', 'gfc_save_pmpro_membership_billing_account' );
function gfc_save_pmpro_membership_billing_account( $user_id ) {
    
    //only give right users access
    $membership_level_capability = apply_filters("pmpro_edit_member_capability", "manage_options");
    if ( !current_user_can( $membership_level_capability ) )
        return false;
 
    update_usermeta( absint( $user_id ), 'gfc_disable_billing_notice', wp_kses_post( $_POST['gfc_disable_billing_notice'] ) );
}

//Disable Billing Notice/Receipt Emails based on user profile setting
function gfc_pmpro_recipient_filter($recipient, $email) {
		
	//disabled email templates - https://www.paidmembershipspro.com/documentation/member-communications/list-of-pmpro-email-templates/
	$disabled_templates = array( 
	    'billing',
	    'billing_failure',
	    'billable_invoice',
	    'invoice',
	);
	
	//only if using one of those tmeplates
	if( in_array( $email->template, $disabled_templates ) ) {
	    
	    //check if user has billing notices disabled
	    $user = get_user_by( 'login', $email->data['user_login'] );
	    $billing_disabled = get_user_meta( $user->ID, 'gfc_disable_billing_notice', true );
	    
	    if( $billing_disabled == 'Yes' ){
            $recipient = NULL;
        }
	}
	
	return $recipient;
}
add_filter('pmpro_email_recipient', 'gfc_pmpro_recipient_filter');