This tool extracts engagement data from MailChimp campaigns.
Extracts clicks and opens per campaign split by User (Not available as an export via Mailchimp direct)
Aggregates the User Data to show overall campaign engagement (similar to Mailchimp's reports)
List ID's can be found when you go into Audience Settings via Mailchimp. They'll be a random set of letters and numbers like "aY7dJi8".
This tool can take some time to work, largely due to limits in Mailchimp's abilities. Please wait until the browser icon stops spinning.