You can specify that the customer is subscribed to your newsletter at the time of registration. To do this, a checkbox with custom text can be added to the registration form in the options here. Only if the customer activates the checkbox in the registration form will their email address be subscribed to the newsletter. Here you can decide whether the double opt-in process should be carried out via MailChimp or Shopware.
After activation, the registration form will be displayed as follows:
