With the intro of Mail Goggles, you get to set a schedule during which times you could potentially fall prey to the temptation to email that ex-girlfriend and try to get back together, or whatever, and it then asks you a series of math questions that you need to respond to within a certain amount of time. Fail to answer the questions and your mail stays as an unsent draft.

For some people, they should leave this feature on full time.  You know who you are…