diff --git a/appsscript.json b/appsscript.json
index bda66f5..7a70c7a 100644
--- a/appsscript.json
+++ b/appsscript.json
@@ -6,6 +6,6 @@
     "executeAs": "USER_DEPLOYING"
   },
   "exceptionLogging": "STACKDRIVER",
-  "oauthScopes": ["https://www.googleapis.com/auth/script.external_request", "https://www.googleapis.com/auth/script.scriptapp"],
+  "oauthScopes": ["https://www.googleapis.com/auth/script.send_mail", "https://www.googleapis.com/auth/script.external_request", "https://www.googleapis.com/auth/script.scriptapp"],
   "runtimeVersion": "V8"
 }