Wow! Really cool. Cheers for the scraping portion being open source. I had fun searching for some of my postgres pain points and reading old discussion :).
I'm curious how you're determining the cutoff point for showing results?
Expand and hide for emails in thread is a really nice UI touch.
It would be cool if there were a way to search across all the channels at once.
On a similar note, the search query changing when I click on different threads is also a pain.
Search query in the URL would be cool for sharing functionality.
Noticed that there are sub-sentence highlights in the sidebar selector, but not the larger email thread view. Having them in the larger view would make it a bit easier to grok the results for me.
