Gmail came out with an interesting feature today called Mail Goggles which forces you to solve simple math problems before an email is sent out to delay sending email you would later regret. My favorite part about this feature is when it is actually active by default:

…Mail Goggles is only active late night on the weekend as that is the time you’re most likely to need it.

From the official post:

When you enable Mail Goggles, it will check that you’re really sure you want to send that late night Friday email. And what better way to check than by making you solve a few simple math problems after you click send to verify you’re in the right state of mind?

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