TechCrunch has a post up that has some screenshots of what Gmail looked like before it was released to the public in 2004. None of the screenshots had dates on when they were taken. Still interesting to see how the site was laid out over the many versions as well as the logo changes.

http://www.techcrunch.com/2008/06/06/the-evolution-of-pre-launch-gmail-in-screenshots/

I was only pondering this after Philipps last interview...

some images from techcrunch...

http://www.techcrunch.com/wp-content/gmail3.jpg
http://www.techcrunch.com/wp-content/gmail6.jpg

Some discussion on FriendFeed here, including thoughts from Paul and Kevin:

<< I'm so glad that these screenshots have survived and (sort of) been released. I wish the content weren't blurred though – I'm pretty sure it wasn't super-personal or anything – I was usually careful to avoid that. It would also be nice to have the actual screenshots instead of photos of screenshots. – Paul Buchheit

We should ask Keith if we can get real screenshots since they've made them available for photographing anyhow. – Kevin Fox >>

http://friendfeed.com/e/eeb5ed68-3410-11dd-afa9-003048343a40/The-Evolution-of-Pre-Launch-Gmail-In/

Was "Quack" an early name for the product that became Gmail?? See the title bar in the images below...

http://www.techcrunch.com/wp-content/gmail15.jpg

http://www.techcrunch.com/wp-content/gmail16.jpg