Check out the bottom of this post for where they stand on that: http://blog.mandrill.com/rejection-imports-subaccount-enhancements-and-more.html http://blog.man

Check out the bottom of this post for where they stand on that: http://blog.mandrill.com/rejection-imports-subaccount-enhancements-and-more.html http://blog.mandrill.com/rejection-imports-subaccount-enhanc... They get accurate data for clicks, but geolocation/browser stats for opens aren't 100%. They still track the rates, but it looks like they're coming from one of Google's proxies, so this is the best they can do for now.