ultimatemember/includes/core/class-mail.php

<?php
namespace um\core;

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) exit;

if ( ! class_exists( 'Mail' ) ) {
    class Mail {

        function __construct() {

            add_filter('mandrill_nl2br', array(&$this, 'mandrill_nl2br') );

            $this->force_plain_text = '';

        }

        /***
         ***	@mandrill compatibility
         ***/
        function mandrill_nl2br($nl2br, $message = '') {

            // text emails
            if ( !um_get_option('email_html') ) {
                $nl2br = true;
            }

            return $nl2br;

        }

        /***
         ***	@check If template exists
         ***/
        function email_template( $template, $args = array() ) {
            $lang = '';
            $template_path = false;

            if ( function_exists('icl_get_current_language') ) {
                if ( icl_get_current_language() != 'en' ) {
                    $lang = icl_get_current_language() . '/';
                }
            } else {

                $lang = get_locale();
                $arr_english_lang = array('en','en_US','en_NZ','en_ZA','en_AU','en_GB');

                if( in_array( $lang, $arr_english_lang ) || strpos( $lang , 'en_' ) > -1 || empty( $lang ) ||  $lang == 0 ){
                    $lang = '';
                } else {
                    $lang .= '/';
                }

            }

            if ( file_exists( get_stylesheet_directory() . '/ultimate-member/templates/email/' . $lang . $template . '.html' ) ) {
                $template_path = get_stylesheet_directory() . '/ultimate-member/templates/email/' . $lang . $template . '.html';
            } else {
                if ( isset( $args['path'] ) ) {
                    $path = $args['path'] . $lang;
                } else {
                    $path = um_path . 'templates/email/' . $lang;
                }

                if ( file_exists( $path . $template . '.html' ) ) {
                    $template_path = $path . $template . '.html';
                }
            }

            return apply_filters( 'um_email_template_path', $template_path, $template, $args );

        }

        /***
         ***	@sends an email to any user
         ***/
        function send( $email, $template=null, $args = array() ) {

            if ( !$template ) return;
            if ( um_get_option( $template . '_on' ) != 1 ) return;
            if ( !is_email( $email ) ) return;

            $this->attachments = null;
            $this->headers = 'From: '. um_get_option('mail_from') .' <'. um_get_option('mail_from_addr') .'>' . "\r\n";

            $this->subject = um_get_option( $template . '_sub' );
            $this->subject = um_convert_tags( $this->subject, $args );

            if ( isset( $args['admin'] ) || isset( $args['plain_text'] ) ) {
                $this->force_plain_text = 'forced';
            }


            add_filter( 'wp_mail_content_type', array(&$this, 'set_content_type') );
            // HTML e-mail or text
            if ( um_get_option('email_html') && $this->email_template( $template, $args ) ) {
                $this->message = file_get_contents( $this->email_template( $template, $args ) );
            } else {
                $this->message = um_get_option( $template );
            }

            // Convert tags in body
            $this->message = um_convert_tags( $this->message, $args );

            // Send mail
            wp_mail( $email, $this->subject, $this->message, $this->headers, $this->attachments );
            remove_filter( 'wp_mail_content_type', array(&$this, 'set_content_type')  );

            // reset globals
            $this->force_plain_text = '';

        }

        /***
         ***	@maybe sending HTML emails
         ***/
        function set_content_type( $content_type ) {
            return 'text/html';

            /*if ( $this->force_plain_text == 'forced' )
                return 'text/plain';

            if ( um_get_option( 'email_html' ) )
                return 'text/html';

            return 'text/plain';*/
        }


    }
}