Evernote has published an case study on how MailChimp turned data into action with Evernote Business. There might be same bias with the solution due to the publisher 😉 … but the general approach deserves a look.
Mailchimp and EvernoteDeclaration of interests:
The author and the site declare the absence of any financial or non-financial interests respectively any business relation with any of the companies mentioned at time of publication. The business case is exclusively shared based on meeting the editorial criteria of ‘CX Inspiration Hub’.