diff --git a/application/Espo/Core/SelectManagers/Base.php b/application/Espo/Core/SelectManagers/Base.php
index 992ab6bded..c97f537193 100644
--- a/application/Espo/Core/SelectManagers/Base.php
+++ b/application/Espo/Core/SelectManagers/Base.php
@@ -792,6 +792,18 @@ class Base
     {
         $part = array();
 
+        if (!empty($item['field']) && !empty($item['type'])) {
+            $methodName = 'getWherePart' . ucfirst($item['field']) . ucfirst($item['type']);
+            if (method_exists($this, $methodName)) {
+                $value = null;
+                if (!empty($item['value'])) {
+                    $value = $item['value'];
+                }
+                return $this->$methodName($value);
+            }
+        }
+
+
         if (!empty($item['dateTime'])) {
             return $this->convertDateTimeWhere($item);
         }
diff --git a/application/Espo/Resources/layouts/Email/filters.json b/application/Espo/Resources/layouts/Email/filters.json
index 9766ff5fa7..6d7e3446fa 100644
--- a/application/Espo/Resources/layouts/Email/filters.json
+++ b/application/Espo/Resources/layouts/Email/filters.json
@@ -2,6 +2,8 @@
     "account",
     "dateSent",
     "emailAddress",
+    "isRead",
+    "isImportant",
     "name",
     "status",
     "parent",
diff --git a/application/Espo/SelectManagers/Email.php b/application/Espo/SelectManagers/Email.php
index 03301de0e2..ae3f856e70 100644
--- a/application/Espo/SelectManagers/Email.php
+++ b/application/Espo/SelectManagers/Email.php
@@ -267,5 +267,33 @@ class Email extends \Espo\Core\SelectManagers\Base
         }
 
     }
+
+    protected function getWherePartIsReadIsTrue()
+    {
+        return array(
+            'usersMiddle.isRead' => true
+        );
+    }
+
+    protected function getWherePartIsReadIsFalse()
+    {
+        return array(
+            'usersMiddle.isRead' => false
+        );
+    }
+
+    protected function getWherePartIsImportantIsTrue()
+    {
+        return array(
+            'usersMiddle.isImportant' => true
+        );
+    }
+
+    protected function getWherePartIsImportantIsFalse()
+    {
+        return array(
+            'usersMiddle.isImportant' => false
+        );
+    }
 }