diff --git a/src/mailgo.js b/src/mailgo.js
index a36ebb3..39fdbb5 100644
--- a/src/mailgo.js
+++ b/src/mailgo.js
@@ -811,10 +811,10 @@
   };
 
   // validate a single email with regex
-  const validateEmail = email => {
-    let re = /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
-    return re.test(email);
-  };
+  const validateEmail = email =>
+    /^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/.test(
+      email
+    );
 
   // validate an array of emails
   const validateEmails = arr => arr.every(validateEmail);