Correct me if I'm wrong but I don't think the 2 year cookie policy affects GMail. I remember being prompted for a password every so often even if I tell Google

Correct me if I'm wrong but I don't think the 2 year cookie policy affects GMail. I remember being prompted for a password every so often even if I tell Google to keep me signed in. I'm guessing the 2 year cookie is for correlating search results. And even if the cookie itself has an expiration 2 years in the future doesn't mean that GMail will accept that session ID. Can anyone confirm whether or not you can stay logged in to GMail for 2 years using just a cookie?