diff --git a/configuration.org b/configuration.org
index 4cf3f9f..dfad6b6 100644
--- a/configuration.org
+++ b/configuration.org
@@ -3080,6 +3080,7 @@ An alternative could be
   :config
   (org-msg-mode)
   :custom
+  (org-msg-supported-mua '((sendmail-user-agent .  "mu4e")))
   (org-msg-options "html-postamble:nil H:5 num:nil ^:{} toc:nil")
   (org-msg-startup "hidestars indent inlineimages")
   (org-msg-greeting-fmt "\nHello,\n\n")