About the email and task repositories

If you will use rich-HTML portal email messages for event notifications, then images used in sent portal email messages must be publicly available for later access. The email repository creates the required schema to store them in the referenced database. The task repository stores tasks created by the AlertUser API, which can be used with portal email.

If you do not plan to use portal email, then plain text or simple-HTML messages are sent by default from the back office event notification system, and you do not need an email repository data source.