Change body content according to level checkout for Paid Memberships Pro.

change_body_for_email.php

<?php

/**
 * Change body text of email according to level checkout.
 * Assumes level ID is 1.
 * Add this code to your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 
 function my_pmpro_email_body( $body, $email ) {

	if( $email->data[ 'membership_id' ] == "1" && strpos( $email->template, "checkout" ) !== false ) {
		$body = 'Change this text to desired text.';
	}
 
	return $body;
}
add_filter( "pmpro_email_body", "my_pmpro_email_body", 10, 2 );