New Feature: Request more details for setting up mailchimp

[SimonDarksideJ]

Is your feature request related to a problem? Please describe.
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There does not seem to be enough information for how to configure the MailChip integration. I created a signup form but the URL did not look anything like the example given in the config.

Is it possible for you to provide more info on its configuration?

[aalmada]

I'd like to know how to disable the newsletter feature