diff --git a/matrix/synapse/README.md b/matrix/synapse/README.md
index 5d8b13b..f7cfddf 100644
--- a/matrix/synapse/README.md
+++ b/matrix/synapse/README.md
@@ -422,3 +422,11 @@ turn_allow_guests: true
 
 Restart Synapse to activate this bit.
 
+
+# Consent Tracking {#consenttracking}
+
+As administrator you sometimes need to push a message to all your users. See
+the [Synapse documentation](https://element-hq.github.io/synapse/latest/server_notices.html)
+to see how to configure that.
+
+It's also necessary for moderation ([see Draupnir](../draupnir)).