Currently Being ModeratedFeb 2, 2013 12:12 PM (in response to RileysG)
That's been an ongoning problem with the latest iPhoto. Try deleting the mail account in iPhoto's Accounts preference pane and then add the email account back.
If you want the themes effect that you get in iPhoto try using the photo stationary available in Mail:
Using Mail as the email client lets you add multiple addressees easier and gives you a sent version.