Regret that email? Gmail gives users chance to call it back

Just about everybody has sent an email, noticed a mistake as they hit the "send" button and wanted to call it back. Google's Gmail now gives users a brief window to do just that.

An "Undo Send" feature introduced in Google's email programme holds a message for five seconds before sending it. Gmail's sent mail confirmation message now includes an "Undo" link. Clicking on "Undo" will return a message to its draft form.

The feature does not, however, allow a user to recall a message that's already been sent. It just holds your message for five seconds so you have a chance to hit the panic button.

Last year, Google introduced a feature to Gmail designed to prevent users from sending drunken emails. "Mail Goggles" forces users to solve five simple math problems in less than a minute in order to send a Gmail missive.