This is just a trick to be able to build some sort of social network graph based on 'reads' of email isn't it?

Nice use of google/gmail api nevertheless.

I installed it to see if it works/because it looks fun but will probably uninstall it tomorrow when i start freaking out about the privacy/security/my-outgoing-emails-being-blocked implications.

Also it said my inbox is 'unbearable' straight off the bat so presumably you just check total unread or total inbox messages not the ratio - I have a massive inbox but no recent messages that are not read right now so I feel it's very 'bearable'.