diff --git a/defaultwelcome/help_dm_en.md b/defaultwelcome/help_dm_en.md
index 1846dab1e..2f58489bf 100644
--- a/defaultwelcome/help_dm_en.md
+++ b/defaultwelcome/help_dm_en.md
@@ -1 +1,3 @@
 Direct messages will appear here, as a chronological timeline.
+
+To avoid spam and improve security, by default you will only be able to receive direct messages *from people that you're following*. You can turn this off within your profile settings if you need to, by selecting the top **banner** and then the **edit** icon.