How do I create an iCal Alarm to delay send an e-mail in my Drafts folder of Mail?

I've learned how to use iCal Alarm to schedule sending an e-mail. However, all of the instructions I read say that I have to type the e-mail inside the automator's "New Mail Message". Is there a way to type the message in Mail, save it in drafts, and then create an iCal Alarm to schedule sending it?

I got as far as "Get Specified Mail Items" --> "Display Mail Messages". This sequence displayed a message in Drafts. What next to get it to send that message it displayed? I tried adding "Send Outgoing Message" to the sequence with no success. And I tried adding "New Mail Message" --> "Send Outgoing Message" to the sequence with no success.

Sometimes there will be several e-mails I want to delay send (some that I started earlier in the day, saved in Drafts and finished up in the wee hours of the morning) and it seems a waste to have to create a new iCal Alarm for each.

Thank you!