Update mail body logic

- only use alt_text if we can assure that it is set
- use msgHTML() if email type is HTML and alt_text is not set
- in all other cases just use the regular text as body

Author: Raukze

api/sendPic.php

@@ -56,9 +56,15 @@
 
 // Email body content
 $mail->isHTML( $config['mail']['is_html'] );
-$mail->Body = $config['mail']['text'];
 if ($config['mail']['is_html']) {
-    $mail->AltBody = $config['mail']['alt_text'];
+    if (isset($config['mail']['alt_text']) && empty($config['mail']['alt_text'])) {
+        $mail->msgHTML($config['mail']['text']);
+    } else {
+        $mail->Body = $config['mail']['text'];
+        $mail->AltBody = $config['mail']['alt_text'];
+    }
+} else {
+    $mail->Body = $config['mail']['text'];
 }
 
 // for send an attachment