It would be great to show the device and location information for email opens and clicks.
On the macro level, many marketers see the trend toward mobile and want to invest in responsive design, but they find it difficult to justify the business expense without data showing their audience is viewing information on mobile devices.
On the micro level, this information is quite useful: did that prospect view my email on their iPhone at home and never respond? Did that email get viewed on four different devices in ten minutes? Quick salespeople would, for example, be able to call a prospect's mobile phone when the email is viewed on that device and get a higher response rate.
(original discussion: http://community.marketo.com/MarketoDiscussionDetail?id=90650000000PdsgAAC)
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