diff --git a/config.py b/config.py
index b498398..9101de0 100644
--- a/config.py
+++ b/config.py
@@ -3,4 +3,6 @@ ClientSecret = "TxRBilcHdC6WGBee]fs?QR:SJ8nI[g82"
 Scopes = ['https://outlook.office.com/IMAP.AccessAsUser.All','https://outlook.office.com/SMTP.Send']
 RefreshTokenFileName = "imap_smtp_refresh_token"
 AccessTokenFileName = "imap_smtp_access_token"
-# Authority = "https://login.microsoftonline.com/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX/"
+
+# Optionally specify a tenantId here: "https://login.microsoftonline.com/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX/"
+Authority = None