Integrating Eventbrite with Mailchimp

So, you want to:

send Eventbrite attendees directly to Mailchimp
but only if they tick a box in the Eventbrite form saying they give permission to get email updates
which should register them as 'subscribed' in Mailchimp with the associated GDPR checkbox ticked, without necessitating an additional confirmation email

Alright, let's do it:

Setting up Eventbrite

First, add a custom checkbox field in your Eventbrite event:

Set up the trigger

Then, create a new Zap with the HNI Zapier account. Create another instance of this Zap.

Choose the HNI organization in Eventbrite
Choose the right Mailchimp Audience
Go to 'Advanced Mode'.

Expand 'Set up trigger'
Pick the event you want to edit
Click 'continue' and 'test trigger'. Make sure you have already filled out the form yourself beforehand, so Zapier can find a test subscriber.

Set up the intermediary filter

Now, we want to set up a filter in order to only process the participants who tick the opt-in box from the first step. Click the + sign to create this step:

Choose 'filter':

Select 1) the field with the opt-in question and set it to 2) exactly match 3) the correct option, and 4) continue to test it:

If you configured it correctly, Zapier says it would have continued processing this Zap:

Configure the Mailchimp Action

In the last step, you can configure the way the subscriber is sent to Mailchimp. Important steps are:

of course, the correct audience and subscriber email address:

also make sure that they do not get an additional confirmation email, and that their profile simply gets updated if they happen to already be a subscriber: