[brianogilvie]

Why not just file the email once you create the OF action, instead of putting it in Pending? If you have the link to it in OF, you can always access the email via the link.

If you'd like some mark that it hasn't been done, flag it, and create a smart mailbox that shows flagged mails; you can then open up the smart mailbox from time to time and clear flags if the task is done.