From Sperry Software:
Sent Items Organizer for Outlook 2010 (64-bit) organizes your sent email by implementing three different ways for you to file your sent items. You can file the emails based on who you are sending to, based on keywords that exist in the email subject or body, or have it offer you a chance to save the item to an Outlook folder other than the default. You decide in what order these "rules" run and if no email meets the requirements to be moved, then it goes into your regular Sent Items folder just like it does now. You can also specify that emails that you send as a delegate from a shared mailbox (or Sent On Behalf Of) be moved to an Outlook folder you specify. This helps to overcome a shortcoming in the Outlook Rules Wizard, where you cannot move emails sent from a shared mailbox to any other folder.