Wish to send a SINGLE email on a single set date (compose NOW but send LATER).

Wish to send a SINGLE email on a single set date (compose NOW but send LATER).

I simply want a SINGLE email to have a "send on date/time" function from within Zoho. 

For instance for a "thank you" on a particular date to be composed and scheduled at the time of the order. Or, a "we will see you next week" to be sent on a certain date.  

I'm looking for Zoho functionality like I have found on my mac mail through the program called "SendLater" by ChugwaSoft ( http://www.chungwasoft.com/sendlater/) but within Zoho...