From cb9190a1f2a75543d5fea4fa660c3ec7634896a7 Mon Sep 17 00:00:00 2001
From: colemanw <coleman@civicrm.org>
Date: Wed, 7 Jun 2023 09:02:47 -0400
Subject: [PATCH] UtilsRule - Don't check empty values when validating email

---
 CRM/Utils/Rule.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CRM/Utils/Rule.php b/CRM/Utils/Rule.php
index 28c563817a..df620d1637 100644
--- a/CRM/Utils/Rule.php
+++ b/CRM/Utils/Rule.php
@@ -658,6 +658,10 @@ class CRM_Utils_Rule {
    * @return bool
    */
   public static function email($value): bool {
+    if ($value === '' || is_null($value)) {
+      // Nothing to check
+      return TRUE;
+    }
     if (function_exists('idn_to_ascii')) {
       $parts = explode('@', $value);
       foreach ($parts as &$part) {
-- 
2.25.1