Topics

You can use this option with your single opt-in subscription form or double opt-in subscription form.

If you choose a single opt-in form, the subscriber can configure or change preferred topics only in the bell widget

In case of a double opt-in subscription form, you can also ask users about their preferred topics as they agree to receive notifications via the form itself. See Subscription form creator topics for more information.

Every subscriber who chooses their preferred topics will receive a label (or labels) sys.topic. See how to configure this option under Topics.