Anyone that's guilty of sending emails in the wee hours when they're drunk, only to regret them the next day, will be making a beeline for a new feature available in Gmail.

Mail Goggles is a new service in the webmail software that Google claims will double-check whether a user really wants to send an email message.

According to Jon Perlow, the Google developer behind the function, it's the perfect antiodote to the online equivalent of a drunken dial.

"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. Gmail can't always prevent you from sending messages you might later regret, but today we're launching a new Labs feature I wrote called Mail Goggles which may help," he said in a blog.

Mail Goggles can be enabled using the Settings tab located in the righthand corner of Gmail. Once enabled, it automatically kicks in during the small hours of Friday and Saturday night, but you can alter the settings to include other days too.

If a user tries to send a message between these times, Mail Goggles asks the user if they are really sure about sending a message. The user also must complete some simple maths problems in order to send it.

While Mail Goggles may act as an obstacle to drunk emailers, I'm not sure it's a failsafe method. After all, more than likely you'll be able to solve the maths problem (its not going to be quadratic equations after all) and Google will deem you 'sensible' enough to send the email, or for those hell bent on sending it, failure to complete the problems will result in web rage that'll leading to swapping to Hotmail instead.

Now, if only they can invent an app that will stop poking when drunk on Facebook.

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