diff --git a/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php b/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
index b78cc9b5f6..ca7dee2acf 100644
--- a/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
+++ b/src/applications/metamta/storage/PhabricatorMetaMTAReceivedMail.php
@@ -290,9 +290,8 @@ final class PhabricatorMetaMTAReceivedMail extends PhabricatorMetaMTADAO {
       $handler = PhabricatorAuditCommentEditor::newReplyHandlerForCommit(
         $receiver);
     } else if ($receiver instanceof ConpherenceThread) {
-      $handler = id(new ConpherenceEditor())
-        ->setActor($user)
-        ->buildReplyHandler($receiver);
+      $handler = id(new ConpherenceReplyHandler())
+        ->setMailReceiver($receiver);
     }
 
     $handler->setActor($user);