diff --git a/plugins/talk-plugin-notifications/README.md b/plugins/talk-plugin-notifications/README.md
index 58293fee7..c43ed4e97 100644
--- a/plugins/talk-plugin-notifications/README.md
+++ b/plugins/talk-plugin-notifications/README.md
@@ -19,4 +19,13 @@ Configuration:
 - `TALK_CLIENT_FORCE_NOTIFICATION_SETTINGS` - When `TRUE`, the settings pane for notifications will show always, even if the user does not have a `local` profile. (Default `FALSE`).
 
 You can enable other notification options by adding more
-`talk-plugin-notification-*` plugins!
\ No newline at end of file
+`talk-plugin-notification-*` plugins!
+
+## Email Subjects
+
+While it seems in your notification category plugin you can set the subject
+line by adjusting the translation, Talk's default behavior is to add a prefix
+before the subject of each email sent. This is always set to the
+[TALK-EMAIL-SUBJECT-PREFIX](/talk/advanced-configuration/#TALK-EMAIL-SUBJECT-PREFIX)
+configuration variable. You should change this parameter if you want to affect
+how the subject is rendered.
\ No newline at end of file