From bb924f1f4d3981ec200ce8036a6a9ca33f399339 Mon Sep 17 00:00:00 2001
From: Pascal F <pfouque@users.noreply.github.com>
Date: Wed, 3 Apr 2024 11:37:21 +0200
Subject: [PATCH] Add minimal type check

---
 django_mailbox/models.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/django_mailbox/models.py b/django_mailbox/models.py
index d98ba1f..e502753 100644
--- a/django_mailbox/models.py
+++ b/django_mailbox/models.py
@@ -655,6 +655,9 @@ class Message(models.Model):
         pre-set it.
 
         """
+        if not isinstance(message, EmailMessage):
+            raise ValueError('Message must be an instance of EmailMessage')
+
         if not message.from_email:
             if self.mailbox.from_email:
                 message.from_email = self.mailbox.from_email