diff --git a/mailbox-is-running.md b/mailbox-is-running.md
index 3da1d87..bb4cf59 100644
--- a/mailbox-is-running.md
+++ b/mailbox-is-running.md
@@ -23,6 +23,9 @@ And lastly, tap the Unlink link at the bottom of the screen, which should lead t
 
 Repeat on different devices, portrait and landscape, navigate back and forth, double tap the Unlink link on the status screen etc.  
 
+The difference between the mailbox status screen on the mailbox side and Briar side: 
+- on the mailbox device, mailbox status screen contains the stop button. On the Briar side of things, the mailbox status screen contains Check Connection Link.  Which means that on the mailbox device, the user can choose to stop mailbox but we cannot do that from the Briar device.  On the other hand, we are able to check the Briar-Mailbox connection from the Briar device, but we cannot do that from the Mailbox device. 
+
 
 [Back to Testing](https://code.briarproject.org/briar/briar/-/wikis/testing)