From 244e2e8d86427c86a46a80457db9e96751480da9 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Sat, 28 Jul 2018 20:45:46 +0200
Subject: [PATCH] Allow empty email

---
 Account/Account.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Account/Account.php b/Account/Account.php
index 2cba85883..5c53f8cc7 100644
--- a/Account/Account.php
+++ b/Account/Account.php
@@ -453,11 +453,11 @@ class Account implements ArrayableInterface, \JsonSerializable
      */
     public function setEmail(string $email) : void
     {
-        if (!Email::isValid($email)) {
+        if ($email !== '' && !Email::isValid($email)) {
             throw new \InvalidArgumentException();
         }
 
-        $this->email = mb_strtolower($email);
+        $this->email = \mb_strtolower($email);
     }
 
     /**