Gmail Custom Time

Google Introduces “Gmail Custom Time”
Now You can forget ever having to send a “belated” Birthday email again with Gmail’s new Custom Time feature (although if the person doesn’t rate more than an email - not even an emailed greeting card - why bother?). Using an e-flux capacitor to resolve issues of causality, the new feature allows you to send emails to the past, but only to April 1, 2004, the day Google launched Gmail. You also get only 10 Custom Time emails a year. When asked about the limitations of the feature, Google said:

“If we were to let you send an email from Gmail before Gmail existed, well, that would be like hanging out with your parents before you were born — crazy talk.”