diff --git a/docs/developers/releasing.rst b/docs/developers/releasing.rst
index a5a470f750..3964d27f5c 100644
--- a/docs/developers/releasing.rst
+++ b/docs/developers/releasing.rst
@@ -310,7 +310,7 @@ Announce to the world
 
 Let people know that there is a new version:
 
-#. Announce on mailing lists:
+#. Announce on mailing lists **using plain text** emails:
 
    - translate-announce@lists.sourceforge.net
    - translate-pootle@lists.sourceforge.net