From 055762286132d545cbc064dce645562c0d51532f Mon Sep 17 00:00:00 2001
From: Taylor Otwell <taylorotwell@gmail.com>
Date: Thu, 30 Apr 2020 14:24:00 -0500
Subject: [PATCH] use single space if plain email is empty

---
 src/Illuminate/Mail/Mailer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Illuminate/Mail/Mailer.php b/src/Illuminate/Mail/Mailer.php
index 01a32bded0a8..be0851194541 100755
--- a/src/Illuminate/Mail/Mailer.php
+++ b/src/Illuminate/Mail/Mailer.php
@@ -331,7 +331,7 @@ protected function addContent($message, $view, $plain, $raw, $data)
         if (isset($plain)) {
             $method = isset($view) ? 'addPart' : 'setBody';
 
-            $message->$method($this->renderView($plain, $data), 'text/plain');
+            $message->$method($this->renderView($plain, $data) ?: ' ', 'text/plain');
         }
 
         if (isset($raw)) {