Form googlemail directly? I can not believe that.. Who in their right mind would do that?
There are other options: "Google Toolbar", Chrome.. but it does not matter.
Google indexes stuff that people publish, it does not do black magic.
Google know about 1560 URLs (by screenshot)
For safety reasons, he showed you only the first 170, but there are other ways to get those links.
But the problem is not in Google. The problem is that even Google can find a lot of URLs.What you don't understand is that simply visiting the root of the instawallet site (and Torwallet too) redirects you to a new virgin wallet without clicking any buttons. When this happens, the URL changes, so Google indexes a new URL each time, because it doesn't understand what happened and it thinks that there is new content to be shown to search users. IT CANNOT AND WILL NOT DISCOVER EXISTING URLS UNLESS THEY ARE SPECIFICALLY PUBLISHED.
And that BS about Gmail was retarded, they don't index or publish your mail, they just scan it for keywords to provide relevant advertising.