Why you should use a dynamic list instead of a static one

A static list is a fixed selection that you have made from an external system. A static list is therefore a fixed number of contacts and, unlike dynamic lists, cannot grow in size.

Static Lists have some disadvantages that you should be aware of. (Note: this does not apply to static lists that are entered via an integration):

  1. Opt-out must be based on a global opt-out
    If you work with permissions (Newsletter by default) and someone unsubscribes from a Static List Mailing, this opt-out will not be processed in your static list. This means that although a contact may have opted-out of your Permission, they are still contactable because their contact record is Active. You will be able to mail a contact that may have unsubscribed.

    If you work with static lists, you either have to manually track the unsubscribes and process them in your list or use global opt-out. That means someone will be unsubscribed but won't be able to receive any communications. No service messages either.
  2. Manually track data changes
    If you want to use Data Edit Forms within Mail+, you will have to manually make changes to your external system or static list. 
  3. Automated campaigns aren't triggered based on a static list
    Only when a contact is in the active file are automatic campaigns triggered by means of changes and actions. This is not the case with a static list.