What happens when a user opts out of a dynamic list?

When a user opts out of a dynamic list, their status in relation to the list is important to understand. In a dynamic list, members are defined by specific criteria rather than being statically assigned. Therefore, when a user opts out, they do not get removed from the list immediately; instead, they retain their option to opt-out while still being part of the dynamic list's criteria until the next update occurs. This means that even after opting out, they remain on the dynamic list but are not targeted for any specific communications or actions that the list might trigger.

This differs from static lists, where members can be directly removed when they opt out. Essentially, the original criteria that placed the user on the dynamic list still apply; hence, unless they actively meet other criteria to be removed in the future updates of the list, they remain in the dynamic list structure but are effectively opted out of communication.