Preference Center
A preference center lets subscribers manage supported email choices. Connect those choices to sending rules and keep an accessible unsubscribe option.
A preference center is a page where subscribers manage the emails they receive. It may offer mailing lists, topics, or frequency choices, depending on what the sender has implemented.
Make each choice affect sending
A frequency setting needs a corresponding scheduling rule. A topic choice needs an audience rule. Save the change and apply it to future sends. If a scheduled message does not recheck preferences, cancel it or rebuild its audience before sending. Test an opt-out against an old import so it cannot silently restore the subscription.
Keep an accessible unsubscribe option. Choosing fewer topics can be useful, but recipients should not have to complete a survey or select preferences before they can stop the messages covered by their request.
Mailing lists in Loops
Loops adds a contact-specific preference-center link to marketing emails. Public mailing lists appear to all contacts visiting the page. Private lists appear only to contacts already subscribed to them; “private” does not mean hidden from those subscribers. The mailing-list documentation explains the visibility rules.
Keep product account actions separate from marketing choices. Leaving a newsletter should not delete the account. Any operational messages still need to respect applicable delivery suppressions.