Chrome: Gmail introduced its new tabs back in May. This made a lot of people very angry and been widely regarded as a bad move. Mikey, on the other hand, has some much more useful tabs to offer for Gmail users.
The extension scans your email and creates separate tabs for your files, links and photo attachments. By default, Mikey indexes the last 90 days of your email, which is more than enough for most purposes. If you need more, however, you can get older email indexed by paying for a premium subscription.