diff --git a/Email-OAuth-App-Setup.md b/Email-OAuth-App-Setup.md
index 531259d..0d696e4 100644
--- a/Email-OAuth-App-Setup.md
+++ b/Email-OAuth-App-Setup.md
@@ -21,6 +21,7 @@ See https://learn.microsoft.com/en-us/entra/identity-platform/quickstart-registe
 1. Login to the Azure portal, open the App registrations page, and click New registration.
 
 2. Choose the account type (single tenant vs multi-tenant).
+   For personal M365 accounts use the option `Accounts in any organizational directory (Any Microsoft Entra ID tenant - Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)`.
 
 3. Set redirect URI.