The document discusses a new feature created by Google called "Mail Goggles" that aims to prevent users from sending regretful emails while intoxicated. Mail Goggles is an application for Gmail that makes users solve simple math problems before being able to send a message late at night on weekends, when drunken emails are most common. It is meant to give users a pause to reconsider potentially embarrassing emails to exes, bosses, or others that may damage relationships or careers. The feature was inspired by a Google engineer who regretted drunk texts and emails to past romantic interests.