I mean the I would really only include the code for things like:
- Fetching email messages
- Parsing email headers
- Mime parsing
- Converting the text of email bodies into UTF-8
- Threading messages
- Eliding reply text
Given that the official story is that pb made the first version of Gmail in a day, does anyone actually believe that he wrote the code for any of those things in a day? If you honestly believe that I have a bridge to sell you.
Wait till you learn that the source code in Chrome also predates the existence of Google.