diff --git a/emailflow.md b/emailflow.md
index bec0129..87a3aa1 100644
--- a/emailflow.md
+++ b/emailflow.md
@@ -39,7 +39,7 @@ sequenceDiagram
     Note over W,D: All comms encrypted with throwaway <br>(ephemeral) client keys and a <br>.well-known server key
     U->>W: Click SIGNUP 
     U->>W: Provide Email and Complex Password
-    Note over W: Validate Email<br>Ensure Complex Password
+    Note over W: Validate Email<br>Ensure Complex Password<br>(Min 21 chars)
 
     Note right of U: User is warned that they CANNOT<br>RESET PASSWORD, should USE <br>PASSWORD MANAGER etc