Translate Email / Change email content based on different locale for PMPro.

change-email-for-pmpro-locales.php

<?php
/**
 *
 * ===== WARNING =====
 * This code recipe is intended for developers and requires extensive knowledge of websites, and WordPress.
 * Copying and pasting this recipe into your site as-is won't work - you need to follow the steps outlined in this code.
 * If you are unsure, please hire a local WordPress developer or freelance for assistance.
 * 
 * This code recipe was built for private use, outside of Paid Memberships Pro and it's support scope.
 * ===================
 *
 *
 * Adjust email content based on locale used on checkout. Works with WPML plugin.
 * This requires a couple of steps to get working.
 * 1. Inside your PMPro Customizations Plugin, create a folder called email_fr_FR 
 * (You may change fr_FR to the locale your site will be serving besides the default locale - create as many folders that you need).
 * 2. Copy the email templates from 'wp-content/plugins/paid-memberships-pro/email' and paste them into your email_fr_FR folder created above.
 * 3. Manually edit each template with the translation of the emails or adjust the email template to your liking.
 * 4. Repeat these steps for each email folder you created depending on the number of locales your site is using.
 * 5. Paste the code below into your PMPro Customizations Plugin - https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
 
 function my_pmpro_change_email_body_based_on_locale( $body, $email ) {
	$locale = get_locale();

	// If the default locale (in this case en_US) is not loaded, try to switch out the email templates.
	if ( strpos( $locale, 'en_US' ) == false ) {
		// let's use the following template then.
		$body = file_get_contents( plugin_dir_path( __FILE__ ) . 'email_' . $locale . '/' . $email->template . '.html');
	}

	return $body;
}
add_action( 'pmpro_email_body', 'my_pmpro_change_email_body_based_on_locale', 20, 2 );

Please use this gist with care, if further help is needed in configuring and setting this up please reach out to a local WordPress developer or freelancer.