hello in my opinion it is necessary that you develop the function to confirm subscription to the newsletter (being able to personalize the text)
in addition to confirming, also provide a remid (eg after 15 days) to remind the customer to return for example to take the gift.
Being a very simple and useful for everyone I trust that you take it in strong consideration.
Among other things, any newsletter sends a confirmation email.
Resdiary No.
Thank you
Alexander