Gmail check your state of mind
By default it will check your state of mind during the weekend nights. But if you think you will loose control in any other day you better change the default settings to suit you.
How Gmail know your in good state when you send an email? Simple it just give you couple of simple math questions to answer. If you can solve it it knows that you feel alright.
I think this is not a good idea for you if you are really bad at Maths. You will not be able to send any emails.
