Since Chimpegration Classic is an integration tool, it allows you to migrate the data necessary in order for you to work with your data effectively in both the Raiser's Edge and Mailchimp. We do aim to offer you as many options as we can so that you can maintain your data standards.
That said, many of our clients who wish to track the effectiveness of an email appeal sent in Mailchimp find working with the Appeal functionality helpful. In Chimpegration Classic, Campaign Management allows you to add an Appeal code to every one sent and you can also change the Appeal response to show Opens and Clicks. (You can read more about this on this page of our User Guide or you can watch a video showing this section of Chimpegration here.) When gifts are made via the form that was sent in that particular email, if the same Appeal is added to the gift, you will be able to track response rates as well as giving totals, etc. in Raiser's Edge Appeal reports.