diff --git a/src/ZB.MOM.WW.ScadaBridge.CLI/README.md b/src/ZB.MOM.WW.ScadaBridge.CLI/README.md
index 8ec7c4b9..efc0f9c9 100644
--- a/src/ZB.MOM.WW.ScadaBridge.CLI/README.md
+++ b/src/ZB.MOM.WW.ScadaBridge.CLI/README.md
@@ -1302,18 +1302,22 @@ scadabridge --url <url> notification smtp list
 Update the SMTP configuration.
 
 ```sh
-scadabridge --url <url> notification smtp update --id <int> --server <string> --port <int> --auth-mode <string> --from-address <string> [--tls-mode <string>] [--credentials <string>]
+scadabridge --url <url> notification smtp update --id <int> --server <string> --port <int> --auth-mode <string> --from-address <string> [--tls-mode <string>] [--credentials <string>] [--transport <string>]
 ```
 
 | Option | Required | Description |
 |--------|----------|-------------|
 | `--id` | yes | SMTP config ID |
-| `--server` | yes | SMTP server hostname |
+| `--server` | yes | SMTP server hostname (under `--transport Ews`, the full EWS URL — `https://…/ews/exchange.asmx`) |
 | `--port` | yes | SMTP server port |
 | `--auth-mode` | yes | Authentication mode (e.g. `OAuth2ClientCredentials`, `Basic`) |
 | `--from-address` | yes | Sender email address |
 | `--tls-mode` | no | TLS mode: `None`, `StartTLS`, or `SSL` (preserves existing if omitted) |
 | `--credentials` | no | SMTP credentials — `username:password` for Basic, or client secret for OAuth2 (preserves existing if omitted) |
+| `--transport` | no | Email transport: `Smtp` or `Ews` (preserves existing if omitted) |
+
+Under `--transport Ews`, `--server` carries the full EWS URL, `--auth-mode` must be `Basic`,
+and `--port` / `--tls-mode` are unused.
 
 #### `notification sms list`