“With Perlow’s Mail Goggles, users can specify which hours they would like to enable the feature. If a user tries to send an e-mail during the self-selected time — say, midnight to 3 a.m. — a screen pops up forcing the user to solve a series of simple math problems before the message can be sent.” Thinking outside the box for new and useful apps, Gmail engineers try to tackle the thorny problem of drailing (drunk e-mailing.) “Perlow created the function last fall when he found himself sending messages to an ex-girlfriend — late at night — asking to get back together.” I feel you, brother.