Alacrity

Have trouble remembering to include attachments on emails? (You know who you are and you drive the rest of us nuts.) My strategy is to always attach first then write the email, which is effective 95% of the time. However, two clever souls have now fool-proofed gmail and outlook so that the email program alerts you when you're sending an email that mentions "attachments" or something like that without anything attached to the email. Excellent idea!

Courtesy of Lifehacker