diff --git a/src/Tasks/ContentReviewEmails.php b/src/Tasks/ContentReviewEmails.php
index 2131796..efb8f30 100644
--- a/src/Tasks/ContentReviewEmails.php
+++ b/src/Tasks/ContentReviewEmails.php
@@ -30,7 +30,7 @@ class ContentReviewEmails extends BuildTask
      */
     public function run($request)
     {
-        if (!$this->isValidEmail($senderEmail = SiteConfig::current_site_config()->ReviewFrom)) {
+        if (!Email::is_valid_address($senderEmail = SiteConfig::current_site_config()->ReviewFrom)) {
             throw new RuntimeException(
                 sprintf(
                     'Provided sender email address is invalid: "%s".',
@@ -116,7 +116,7 @@ class ContentReviewEmails extends BuildTask
         $siteConfig = SiteConfig::current_site_config();
         $owner = Member::get()->byID($ownerID);
 
-        if (!$this->isValidEmail($owner->Email)) {
+        if (!Email::is_valid_address($owner->Email)) {
             $this->invalid_emails[] = $owner->Name . ': ' . $owner->Email;
 
             return;
@@ -188,12 +188,4 @@ class ContentReviewEmails extends BuildTask
             'ToEmail' => $recipient->Email,
         ];
     }
-
-    /**
-     * Check validity of email
-     */
-    protected function isValidEmail(?string $email): bool
-    {
-        return (bool) filter_var($email, FILTER_VALIDATE_EMAIL);
-    }
 }