We have an existing Chrome extension that you can install and use at http://contactmonkey.com/install. Our plugin automates the tracking of every email you send: you can see who has opened your email, where and on what device.
This is a remote work opportunity with an hourly rate. We have a nice long list of features and bugs that we'd like help with, so this can certainly be full time for a few months. But for the right person this could turn into a permanent job.