This will do it for you:
DoCmd.SendObject , , , Me.Email, , , Me.Subject, "TextToSend", True
This assumes that the Email and subject are going to be pulled from the database. Just rename the Me.Email and Me.Subject to match your controls name. You could also do the same thing with the "TextToSend" field. If you change the true at the end to a false the email will automaticaly be sent without a promt from the sender.
There is a lot of different arguments that you can use to send email, if you have further questions or would like more help be specific with what you want to do including the relevant field/control names.