If you want to set your future mails in advance, emailfuture is a free web-based application that allows you to send emails to yourself at a future date that you set.
For sent mail in emailfuture simply enter up to four email addresses in the space provided along with the subject and the body of your message, and then select the day and the time of email to be sent.
The main use of emailFuture is reminded the important dates like anniversaries, birthdays etc.
