Google Inc. announced the introduction of a new feature in its Gmail that would prevent e-mail senders from sending messages they would later regret. The best example of such e-mails is a message sent by a drunken person.

The new feature will be called Mail Goggles. It will intervene when users of Google’s electronic mail service compose an e-mail at the program's default launching time of between 10 p.m. of Friday to 4 a.m. of Saturday. The Gmail will test senders if they are sober enough through arithmetical quizzes that will appear on the screen. If the sender doesn’t answer the quizzes in a matter of seconds, the e-mail service will put his message on hold.

Don’t panic, if you suck at math and you know it, you will still be able to send e-mails during that period of time even if the service might mistake you for a drunken person. However, it won’t mistake you because, when released, the feature will have to be activated.

Nevertheless, if you do have the bad habit of e-mailing your ex-girlfriends after having one beer too many, you should activate the new feature through the "Settings" link of Gmail, under the "Labs" tab.

The Mail Goggles was developed by Google engineer Jon Perlow with the main purpose of helping people avoid sending e-mails when they shouldn’t.

"Sometimes I send messages I shouldn't send. Like the time I told that girl I had a crush on her over text message. Or the time I sent that late night email to my ex-girlfriend that we should get back together,” Perlow said in a blog.

The new service was set by Google to default to start on Friday and Saturday evenings. However, users can change the setting so that the feature may help them on other evenings depending on when they usually drink.