Day 017 Email confirmation #dailyui

For the email confirmation challenge, I chose to create an extension of yesterday's design (pop-up overlay travel ad). I use a tone of voice that is enthusiastic, inspirational and in no way pushy (although it includes a few call to action links, in case the receiver chooses to get involved more with the brand).

I was wondering how feasible it were to include a real-life countdown feature that would actually update 'days-to-go' every time the email is opened. If you have any thoughts on this, feel free to post your comments.