diff --git a/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php b/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php
index 70e758715e..b80cf8644a 100644
--- a/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php
+++ b/src/applications/mailinglists/storage/PhabricatorMetaMTAMailingList.php
@@ -51,7 +51,7 @@ final class PhabricatorMetaMTAMailingList extends PhabricatorMetaMTADAO
   }
 
   public function getPolicy($capability) {
-    return PhabricatorPolicies::POLICY_USER;
+    return PhabricatorPolicies::getMostOpenPolicy();
   }
 
   public function hasAutomaticCapability($capability, PhabricatorUser $viewer) {