Custom “Email” action in UIDocumentInteractionController

Is there any way to add a custom action to the list of actions provided by the UIDocumentInteractionController?

I would like to add an "Email" action to the list. I know I can use the MFMailComposeViewController to send email with attachments, but the problem is not how to send a file as an attachment the problem is one of UI. I have an "Action" UIBarButtonItem which brings up the UIDocumentInteractionController providing options for printing and opening in iBooks. Great... but I also need a separate UIBarButtonItem for sending the file attached to an email. It's slightly confusing to users to see something like this:

It's not just confusing to users, but really not an ideal UI. It would be best to have "Email" as one of the options in the UIDocumentInteractionController's list.

Any suggestions?

Kenny