Change the admin email for all Paid Memberships Pro admin emails.

my-pmpro-change-admin-email.php

<?php
/**
 * Change the email address for all admin related emails in Paid Memberships Pro.
 * Follow this guide to add custom code to your WordPress site - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_pmpro_change_admin_to_email( $user_email, $email ){		
    if( strpos( $email->template, "_admin" ) !== false ) {
	$user_email = 'memberadmin@someemail.co';
    }
	
	return $user_email;
}
add_filter( "pmpro_email_recipient", "my_pmpro_change_admin_to_email", 10, 2 );

To only change the email address for emails sent to admin after a membership checkout - https://gist.github.com/ipokkel/fc24bfd35cc5075e2b0b6e92b2ebb110

To change the admin email for the activity reports - https://gist.github.com/dwanjuki/93331ac5c300f98523538128092212e7

To make the change for specific membership levels, please see: https://gist.github.com/MaryOJob/db19e2a60f9c4bdbaedefca1b4af909f