Question:
If you can build a module that detects the email clients viewing our ad impressions, can it be the list in text shown here? Do you know if can break down the clients even further to show Yahoo Classic vs. Yahoo All-New?
http://www.campaignmonitor.com/stats/email-clients/
Answer:
Yes, we can implement new system which can track email-clients. It can give us easily mail domain like google.com, aol.com and yahoo.com and still we can filter them then we can get deep structure like as you told, yahoo beta, yahoo classic.
(Mail server wont give any value saying that it’s beta or classic but we need to get from url of server only. All trackers will get from urls only.)
We can display one more link image near to each banner/campaigns/advertisers in stats page. Clicking on that image, will give popup which can list out all mail server (including other referrer domain.).