diff --git a/mailgo.d.ts b/mailgo.d.ts
index 9ef8ad3..dc7beb8 100644
--- a/mailgo.d.ts
+++ b/mailgo.d.ts
@@ -4,6 +4,7 @@
 
 export type MailgoConfig = {
   initEvent?: string;
+  // TODO here mailgo configurations!
 };
 
 export default function mailgo(mailgoConfig?: MailgoConfig): void;