Change confirmation email contents in Paid Memberships Pro according to user level checkout.

adjust_pmpro_email_according_to_level.php

<?php
/**
 * Adjust email template according to user's level that they are checking out for.
 * Add this code to your PMPro Customizations plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 * For more information in customizing emails in Paid Memberships Pro visit - https://www.paidmembershipspro.com/documentation/member-communications/customizing-email-templates/
 * List of available email templates - https://www.paidmembershipspro.com/documentation/member-communications/list-of-pmpro-email-templates/
 */

function adjust_pmpro_email_according_to_level( $email ){

	//store email templates in an array.
	$pmpro_email_templates = array( 'checkout_free', 'checkout_check', 'checkout_express', 'checkout_freetrial', 'checkout_paid', 'checkout_trial' ); //Email templates that possibly are sent out to user's when they checkout with PMPro.

	//Get the level that the user is checking out for.
	$level_for_email_change = $email->data['membership_id']; 

	if( in_array( $email->template, $pmpro_email_templates ) ){

		switch ( $level_for_email_change ) {
			case '1':
				$email->subject = 'This subject will change for user level 1';
				$email->body = 'This will change the user\'s body text for confirmation email for level 1';
				break;
			
			case '3':
				$email->subject = 'This subject will change for user level 3';
				$email->body = 'This will change the user\'s body text for confirmation email for level 3';
				break;

			case '5':
				$email->subject = 'This subject will change for user level 5';
				$email->body = 'This will change the user\'s body text for confirmation email for level 5';
				break;

			default:
			//leave empty to not do any changes to email.
				break;
		}
	}

	return $email;
}

add_filter( 'pmpro_email_filter', 'adjust_pmpro_email_according_to_level' );