Some time we need to send mail on particular date and time this is possible with email Client (Like – Outlook, Thunderbird, etc.) but your computer must be ON on that scheduled time to send mail from email client because email client working on local computer. Now you can Schedule your email online using your existing email address.
This is Possible with following online Service.
With this service, you can write emails with your existing email address, and they will get sent at the exact date, or dates that you specify - down to the minute.