Questions?

I have an Outgrow quiz that is integrated with Mailchimp. During testing, the leads are receiving opt-in mails from Outgrow and they do not receive the email from Mailchimp unless they click the opt-in button form the Outgrow email.

Are there any other ways for the leads to opt-in? This seems like too much friction.

Please direct me to the proper documentation to change the opt-in method.