Due to LinkedIn Analytics, Twitter Organic, and MailChimp regulations, we can retrieve their data only when you add your LinkedIn, Twitter, and MailChimp source to Whatagraph source management. This means you can only track your current data, and historical data is unavailable.
Your LinkedIn, Twitter, and 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 add your sources to the source management.