diff --git a/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php b/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php
--- a/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php
+++ b/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php
@@ -1,7 +1,9 @@
 <?php
 
 final class PhabricatorMetaMTAMailingList extends PhabricatorMetaMTADAO
-  implements PhabricatorPolicyInterface {
+  implements
+    PhabricatorPolicyInterface,
+    PhabricatorDestructableInterface {
 
   protected $name;
   protected $email;
@@ -40,4 +42,16 @@
     return null;
   }
 
+
+/* -(  PhabricatorDestructableInterface  )----------------------------------- */
+
+
+  public function destroyObjectPermanently(
+    PhabricatorDestructionEngine $engine) {
+
+    $this->openTransaction();
+    $this->delete();
+    $this->saveTransaction();
+  }
+
 }