Is there a way to add a "Category" to an outgoing email?  When I type an email I often times want to have that outgoing email categorized in a particular place because it's important.  I don't want to have to go to the sent folder to apply a category to each email that I send.  Some emails it doesn't matter but some it does.  If it's an ongoing thing I know I can set up a rule/filter to do that but often times it's a one shot thing so setting up a rule/filter is not appropriate.