Since opens require a pingback from the 1x1 pixel image in the emails, and gmail will now be storing these images on their own secure server, how is it that Marketo will be able to tell that a pingback is happening if the ping is going to google??
http://gmailblog.blogspot.com/2013/12/images-now-showing.html
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But thanks to new improvements in how Gmail handles images, you’ll soon see all images displayed in your messages automatically across desktop, iOS and Android. Instead of serving images directly from their original external host servers, Gmail will now serve all images through Google’s own secure proxy servers. "
Perhaps in your good news this was explained to you. Cheryl can you elaborate on how this is going to work?