With Carrd, websites for the most diverse areas can be implemented. The special feature here is its simplicity. You can create visually appealing websites quickly and cheaply. Through integrations, currently used newsletter providers can be used for opt-ins, for example. Carrd offers various integration options, including Mailchimp, Convertkit, Stripe, PayPal, Typeform, +9 others.
The company Carrd Inc. is based in Franklin, USA. You can find out more about data protection in Carrd's data protection declaration:
https://carrd.co/docs/general/privacy