diff --git a/CONTRIBUTE.md b/CONTRIBUTE.md
index ddd5843..92506bc 100644
--- a/CONTRIBUTE.md
+++ b/CONTRIBUTE.md
@@ -105,6 +105,7 @@ You will probably need to store the following things:
 
 * authentication credentials,
 * timestamps/IDs of the last seen message,
+* recipients if the social network doesn't post publicly,
 * platform-specific settings
 * anything else your platform needs