Due to MailChimp regulations, we can retrieve MailChimp data only from the moment you add your MailChimp source to the Whatagraph. This means that you can only track your current data, and historical data is not available.

Your MailChimp performance data will be building up each day and you will be able to generate reports for any period starting from the moment you added your MailChimp source to the source management.