PeakInbox gives you the view and open data you need. By hosting marketers’ images — and crunching the numbers — PeakInbox provides detailed analytics on who sees your promo image, and who opens the email. Better yet, PeakInbox takes you one step further by automating testing of an unlimited number of promo images. When your test reaches statistical significance, PeakInbox will lock-in the winning image. You get more opens, and Gmail’s AI sees you as a sender where more people engage with your Annotations.