I have installed Mailchimp, created an API key and added it, etc., but do not know how to add the contacts. Event Espresso does not show up on the list of integrated services for importing contacts / lists. Do I write an email through Mailchimp or on my WordPress website?
Event Espresso automatically adds the contacts to the list you have selected on an event as registrations are made on that event. However if you want to import contacts for registrations that have already been made, you’ll need to export them from the site and manually import them into the MailChimp list, we have some documentation on doing so here: