Connecting forms with Mailchimp

We want to start with e-mailmarketing in Mailchimp. We have a form on our website, and want to have an automation where the people that agree to recieve marketing material can be automaticly imported to Mailchimp.

Is there any solution for this? Where we can keep our current form from Balbooa?

The formes:
- https://norheimshus.no/bestill-gratis-huskatalog
- https://eventyrhytter.no/se-digital-katalog

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