diff --git a/DependencyInjection/Configuration.php b/DependencyInjection/Configuration.php
index 48d789a5..d49964b1 100644
--- a/DependencyInjection/Configuration.php
+++ b/DependencyInjection/Configuration.php
@@ -175,6 +175,7 @@
  *   - subject: string
  *   - [level]: level name or int value, defaults to DEBUG
  *   - [bubble]: bool, defaults to true
+ *   - [headers]: optional array containing additional headers
  *
  * - socket:
  *   - connection_string: string
@@ -594,6 +595,10 @@ public function getConfigTreeBuilder()
                             ->end()
                             ->scalarNode('subject')->end() // swift_mailer and native_mailer
                             ->scalarNode('content_type')->defaultNull()->end() // swift_mailer
+                            ->arrayNode('headers') // native_mailer
+                                ->canBeUnset()
+                                ->scalarPrototype()->end()
+                            ->end()
                             ->scalarNode('mailer')->defaultValue('mailer')->end() // swift_mailer
                             ->arrayNode('email_prototype') // swift_mailer
                                 ->canBeUnset()
diff --git a/DependencyInjection/MonologExtension.php b/DependencyInjection/MonologExtension.php
index 285e9b81..500a041b 100644
--- a/DependencyInjection/MonologExtension.php
+++ b/DependencyInjection/MonologExtension.php
@@ -540,6 +540,9 @@ private function buildHandler(ContainerBuilder $container, $name, array $handler
                 $handler['level'],
                 $handler['bubble'],
             ));
+            if (!empty($handler['headers'])) {
+                $definition->addMethodCall('addHeader', $handler['headers']);
+            }
             break;
 
         case 'socket':
diff --git a/Resources/config/schema/monolog-1.0.xsd b/Resources/config/schema/monolog-1.0.xsd
index cf0eac87..6c23e93a 100644
--- a/Resources/config/schema/monolog-1.0.xsd
+++ b/Resources/config/schema/monolog-1.0.xsd
@@ -88,6 +88,7 @@
         <xsd:attribute name="content-type" type="xsd:string" />
         <xsd:attribute name="webhook-url" type="xsd:string" />
         <xsd:attribute name="slack-team" type="xsd:string" />
+        <xsd:attribute name="headers" type="headers" />
     </xsd:complexType>
 
     <xsd:simpleType name="level">
@@ -186,4 +187,10 @@
         </xsd:choice>
         <xsd:attribute name="code" type="xsd:integer" />
     </xsd:complexType>
+
+    <xsd:complexType name="headers">
+        <xsd:choice minOccurs="0" maxOccurs="unbounded">
+            <xsd:element name="header" type="xsd:string" />
+        </xsd:choice>
+    </xsd:complexType>
 </xsd:schema>