do not add mime-version header if already present (#1302)

simple-login · Sep 22, 2022 · 72a130e · 72a130e
1 parent b5aff49
commit 72a130e
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/app/email_utils.py b/app/email_utils.py
@@ -319,7 +319,8 @@ def send_email(
     date_header = formatdate()
     msg[headers.DATE] = date_header
 
-    msg[headers.MIME_VERSION] = "1.0"
+    if headers.MIME_VERSION not in msg:
+        msg[headers.MIME_VERSION] = "1.0"
 
     if unsubscribe_link:
         add_or_replace_header(msg, headers.LIST_UNSUBSCRIBE, f"<{unsubscribe_link}>")