How do I ensure a Mailchimp campaign triggered by a Stripe payment in Zapier is sent only once?

Does anyone know if I create a zap that is triggered by a Stripe payment being made, which then creates a subscriber in Mailchimp and then sends out a Mailchimp campaign, if a regular campaign can only be sent out once, or if it will continue to be sent out individually for every new subscriber that is added?

Is there a specific type of Mailchimp campaign I should use if the regular campaigns don’t work for this?

Thanks in advance!