How to save Paypal "receiver_email" on Paypal Standart payments (if you want see later to what emails payment was send).

edd_save_receiver_email.php

<?php

/**
 * Lets save Paypal "receiver_email"
 */
add_action( 'edd_paypal_web_accept', 'my001_edd_process_paypal_web_accept_and_cart', 11, 2 );
function my001_edd_process_paypal_web_accept_and_cart( $data, $payment_id )
{
    if ($data['txn_type'] != 'web_accept' && $data['txn_type'] != 'cart' && $data['payment_status'] != 'Refunded') {
        return;
    }

    if (empty($payment_id)) {
        return;
    }

    $payment_status = strtolower( $data['payment_status'] );
    $business_email = isset( $data['business'] ) && is_email( $data['business'] ) ? trim( $data['business'] ) : trim( $data['receiver_email'] );

    if ( 'completed' == $payment_status ) {
        edd_insert_payment_note( $payment_id, sprintf('PayPal business_email/receiver_email: %s', $business_email) );
    }
}