We created Hook to empower everyone to spot suspicious emails in their inbox. Technical checks aren't enough, and so Hook visualizes the trust rating for an email address so you can spot hackers at a glance. Read more about our approach in our manifesto https://medium.com/@hook_global/..., and if you have any feedback please let us know! P.S Hook works beautifully on Gmail apps, we have an experimental BETA of Mac Mail but for the best experience please use Gmail!