Current State of the feature Initially, this feature used the Notifier Django app but was deprecated and removed from the configuration in favor of edx-notifications. More info about this deprecation can be found in the GitHub issue ( https://github.com/openedx/build-test-release-wg/issues/22). The edx-notifications app was not supported though, so its repository was archived and moved to openedx-unsupported/edx-notifications. Check the deprecation ticket (https://github.com/openedx/edx-notifications/issues/253) and corresponding discussion (https://discuss.openedx.org/t/deprecation-removal-edx-notifications-repository/6748) for details. What remains in the edx-platform The forum initial page contains the how-to info with the notification preferences toggle. This section is responsible for toggling the "notification_pref" user preference (aka NOTIFICATION_PREF_KEY). I didn't find any usage of this preference across the platform, so I'm suggesting hiding it by default by setting the ENABLE_FORUM_DAILY_DIGEST setting to `False`.