Gmail Custom Time allows you to:
- Pre-date your messages: You tell us what time you would have wanted your email sent, and we'll take care of the rest. Need an email to arrive 6 hours ago? No problem.
- Mark as read or unread: Take sending emails to the past one step further. We let you make emails look like they've been read all along.
- Make them count: Use your custom time stamped messages wisely -- each Gmail user gets ten per year.
- Worry less: Forget your finance reports. Forget your anniversary. We'll make it look like you remembered.