diff --git a/src/Symfony/Component/Mime/Message.php b/src/Symfony/Component/Mime/Message.php
index 94a49764e491..b7ddb76bc780 100644
--- a/src/Symfony/Component/Mime/Message.php
+++ b/src/Symfony/Component/Mime/Message.php
@@ -122,8 +122,8 @@ public function toIterable(): iterable
 
     public function ensureValidity()
     {
-        if (!$this->headers->has('To')) {
-            throw new LogicException('An email must have a "To" header.');
+        if (!$this->headers->has('To') && !$this->headers->has('Cc') && !$this->headers->has('Bcc')) {
+            throw new LogicException('An email must have a "To", "Cc", or "Bcc" header.');
         }
 
         if (!$this->headers->has('From') && !$this->headers->has('Sender')) {