diff --git a/src/applications/maniphest/command/ManiphestCloseEmailCommand.php b/src/applications/maniphest/command/ManiphestCloseEmailCommand.php
--- a/src/applications/maniphest/command/ManiphestCloseEmailCommand.php
+++ b/src/applications/maniphest/command/ManiphestCloseEmailCommand.php
@@ -8,7 +8,10 @@
   }
 
   public function getCommandSummary() {
-    return pht('Close a task.');
+    return pht(
+      'Close a task. This changes the task status to the default closed '.
+      'status. For a more powerful (but less concise) way to change task '.
+      'statuses, see `!status`.');
   }
 
   public function buildTransactions(