Index: admin/configuration.php
--- admin/configuration.php
+++ admin/configuration.php
@@ -50,6 +50,13 @@ $trusted_post_variables = array(
     'xpc_private_key',
     'xpc_public_key',
     'breadcrumbs_separator',
+    'company_mail_from',
+    'newsletter_email',
+    'orders_department',
+    'site_administrator',
+    'smtp_mail_from',
+    'support_department',
+    'users_department',
 );
 
 define('XC_SKIP_BOUNCER_TEST',1);
@@ -269,6 +276,9 @@ if ($option == 'User_Profiles') {
                     // Check email
                     $validation_result = $is_empty || func_check_email($val);
 
+                } elseif ($var_properties[$key]['validation'] == 'email_extended') {
+                    // Check email via XCEmailFormat::EXTENDED
+                    $validation_result = $is_empty || func_check_email($val, XCEmailFormat::EXTENDED);
                 } elseif ($var_properties[$key]['validation'] == 'emails') {
 
                     // Check emails list
@@ -1461,6 +1471,7 @@ $smarty->assign('options',       $options);
 $smarty->assign('option',        $option);
 $smarty->assign('option_title',  $_option_title);
 $smarty->assign('main',          'configuration');
+$smarty->assign('email_extended_validation_regexp', func_email_validation_regexp(XCEmailFormat::EXTENDED));
 
 if (!empty($_option_title))
     $location[] = array( $_option_title, '');
Index: include/func/func.core.php
--- include/func/func.core.php
+++ include/func/func.core.php
@@ -52,6 +52,11 @@ define('SKIP_CACHE', !USE_CACHE);
 define('TEXT_MODE', TRUE);
 define('HTML_MODE', !TEXT_MODE);
 
+abstract class XCEmailFormat {
+    const EXTENDED = 'EXTENDED';
+}
+
+
 /**
  * Use this function to load code of functions on demand (include/func/func.*.php)
  */
@@ -3044,8 +3049,7 @@ function func_get_php_execution_mode()
 /**
  * Returns regular expression for proper email validation
  */
-function func_email_validation_regexp()
-{
+function func_email_validation_regexp($format = '') { //{{{
     // Regexp for address part according to RFC 822
 /*
     $qtext = '[^\\x0d\\x22\\x5c\\x80-\\xff]';
@@ -3068,8 +3072,13 @@ function func_email_validation_regexp()
     # return "^(?:[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])$";
 
     // RFC 2822 - based reg.exp. without double quotes and square brackets
-    return "^[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z](?:[a-z0-9-]*[a-z0-9])$";
-}
+    if (empty($format)) {
+        return "^[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z](?:[a-z0-9-]*[a-z0-9])$";
+    } elseif ($format == XCEmailFormat::EXTENDED) {
+        // Your Company Name <sales@yourstore.com> format
+        return "^([a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z](?:[a-z0-9-]*[a-z0-9]))|([A-z 0-9]{3,}[ ]{1}(<){1}[a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z](?:[a-z0-9-]*[a-z0-9])(>){1})$";
+    }
+} //}}}
 
 /**
  * Display error page using message.html file
Index: include/func/func.mail.php
--- include/func/func.mail.php
+++ include/func/func.mail.php
@@ -768,11 +768,8 @@ function func_pgp_add_key()
 /**
  * This function checks if email is valid
  */
-function func_check_email($email)
-{
-
-    $email_regular_expression = func_email_validation_regexp();
-
+function func_check_email($email, $format = '') {
+    $email_regular_expression = func_email_validation_regexp($format);
     return preg_match('/'.$email_regular_expression.'/Di', stripslashes($email));
 }
 
Index: skin/common_files/admin/main/conf_fields_validation_js.tpl
--- skin/common_files/admin/main/conf_fields_validation_js.tpl
+++ skin/common_files/admin/main/conf_fields_validation_js.tpl
@@ -19,6 +19,7 @@ var validationFields = [
 ];
 
 var invalid_parameter_text = '{$lng.err_invalid_field_data|wm_remove|escape:javascript}';
+var email_extended_validation_regexp = new RegExp("{$email_extended_validation_regexp|wm_remove|escape:javascript}", "gi");
 
 {getvar var=_styles func=func_get_configuration_styles}
 {if $_styles}
Index: skin/common_files/js/conf_fields_validation.js
--- skin/common_files/js/conf_fields_validation.js
+++ skin/common_files/js/conf_fields_validation.js
@@ -48,7 +48,11 @@ function validateFields() {
         res = is_empty || value.search(email_validation_regexp) !== -1;
         break;
 
-            case "emails":
+      case "email_extended":
+        res = is_empty || value.search(email_extended_validation_regexp) !== -1;
+        break;
+
+      case "emails":
         var emails = value.split(/,/);
         var n = 0;
         for (var m = 0; m < emails.length; m++) {
@@ -135,6 +139,7 @@ function validateFields() {
 
     if (
       !res && typeof validationFields[i].validation == 'string'
+      && validationFields[i].validation.match(/php_ver:(\d+.\d+.\d+)/gi)
       && validationFields[i].validation.match(/php_ver:(\d+.\d+.\d+)/gi).length > 0
     ) {
       res = true;