On the last part, I agree with you from a developer's point of view as well. The review process is a shambles at the moment. Sometimes the review process can take weeks and one can still get rejected with no explanation. I understand the need for a manual review when an extension asks for powerful permissions like this one does but an approval time of more than a week is a bit much. And every subsequent update to the extension (even a small description change) also goes through the same review process. Imagine a critical bug fix taking more than a week for approval! It feels like they want to shut down their doors for individual developers. In comparison, firefox took only 2 hours to approve the same extension.
This looks really interesting. I was just checking your app. But, it is asking for "Read, send, delete, and manage your email" permissions. Shouldn't you be just setting the readonly scope for an app like this?