CS

PHPMailer · Aug 22, 2022 · 53d91d3 · 53d91d3
1 parent 0bddcf9
commit 53d91d3
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/src/PHPMailer.php b/src/PHPMailer.php
@@ -1891,13 +1891,14 @@ protected function mailSend($header, $body)
         foreach ($this->to as $toaddr) {
             $toArr[] = $this->addrFormat($toaddr);
         }
-        $to = implode(', ', $toArr);
+        $to = trim(implode(', ', $toArr));
 
         //If there are no To-addresses (e.g. when sending only to BCC-addresses)
         //the following should be added to get a correct DKIM-signature.
         //Compare with $this->preSend()
-        if(trim($to) == '') { $to = 'undisclosed-recipients:;'; }
-
+        if ($to === '') {
+            $to = 'undisclosed-recipients:;';
+        }
 
         $params = null;
         //This sets the SMTP envelope sender which gets turned into a return-path header by the receiver