Journeys no longer require External ID

Now, Journeys do not require External IDs to be set on subscriptions. Instead, Journeys will target your entire user base within OneSignal, including anonymous users. We recommend still configuring External IDs to identify individual users who have subscribed to multiple channels.

This update only affects Journeys created after July 29th 2024. Any Journeys created before this date will need to be archived and duplicated to get this functionality.

Learn more here.