From 2adc53069becd0de3ea2748438646610ad0968db Mon Sep 17 00:00:00 2001
From: Ernest Hymel <ehymel@oncologysupport.com>
Date: Sun, 24 May 2020 11:54:18 -0500
Subject: [PATCH] Allow email message to have "To", "Cc", or "Bcc" header to be
 valid

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

diff --git a/Message.php b/Message.php
index 94a4976..b7ddb76 100644
--- a/Message.php
+++ b/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')) {