diff --git a/mialbox-not-reachable.md b/mialbox-not-reachable.md
new file mode 100644
index 0000000..7d99a64
--- /dev/null
+++ b/mialbox-not-reachable.md
@@ -0,0 +1,10 @@
+In different circumstances mailbox can become unreachable by Briar: 
+- when mailbox does not have internet access
+- when mailbox reboot takes too long (threshold??? **TBD**)
+
+"yes, i think if you reboot the mailbox device and the mailbox app automatically restarts as intended, then briar is unlikely to reach the threshold where it shows a notification to warn about the mailbox being unreachable
+
+1:48 PM
+we haven't decided exactly what that threshold should be - that's to be decided during testing - but ideally it should be high enough that we don't unnecessarily bother the user when there's a temporary issue like the mailbox rebooting"
+
+Is the message to the Briar user going to be the same in all the different cases?
\ No newline at end of file