From b91ffae29217d441445ed3931987119d33b6fa20 Mon Sep 17 00:00:00 2001
From: Hardway Hou <hardway.hou@gmail.com>
Date: Tue, 24 May 2022 10:09:46 +0800
Subject: [PATCH] minor: Support html content in mailer.php

---
 classes/mailer.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/classes/mailer.php b/classes/mailer.php
index 60b1ce4fd..dcb22e6d6 100644
--- a/classes/mailer.php
+++ b/classes/mailer.php
@@ -45,7 +45,15 @@ class Mailer {
 			++$hooks_tried;
 		}
 
-		$headers = [ "From: $from_combined", "Content-Type: text/plain; charset=UTF-8" ];
+		$headers = [ "From: $from_combined" ];
+
+		if($message_html){
+			$headers[]="MIME-Version: 1.0";
+			$headers[]="Content-Type: text/html; charset=UTF-8";
+		}
+		else{
+			$headers[]="Content-Type: text/plain; charset=UTF-8";
+		}
 
 		$rc = mail($to_combined, $subject, $message, implode("\r\n", array_merge($headers, $additional_headers)));