uwsgi and thread don't play nice

backend/app/email.py

@@ -11,7 +11,9 @@ def send_email(subject, sender, recipients, text_body, html_body):
     msg = Message(subject, sender=sender, recipients=recipients)
     msg.body = text_body
     msg.html = html_body
-    Thread(target=send_async_email, args=(app, msg)).start()
+    mail.send(msg)
+    # Thread works surprisingly badly behind uwsgi, just let a uwsgi worker do its thing instead.
+    #Thread(target=send_async_email, args=(app, msg)).start()
 
 def send_password_reset_email(user):
     token = user.get_reset_password_token()