Re: [Orgmode] [OT] Emacs for email?

[jemarch]

    These and the others you will find allude to this approach fitting
    in with the more general GTD view, which is why org-mode is
    critical (for me) to get this working.

I actually do something similar, but keeping the physical emails.  I
maintain (in wanderlust) an Inbox folder and a General folder to hold
my emails.  I process the Inbox in a GTD style.  For each message:

    1) If it is not interesting, delete.
    2) If it is useful for reference, archive it in the ref system and
       move the email to General, without storing any link to it in my
       reference system.
    3) If it is an email that I can answer quickly, do it and move the
       email to General.
    4) If it is an email that I want to answer but that requires some
       previous investigation/action, I move the email to General and,
       using remember, create a new NEXT item in my todo.org.  The NEXT
       item has an hyperlink pointing to the email in the General mbox.

Now, I wonder if is it possible to implement the previous system
without having to maintain the General mbox (that is huge).  It is
clear that I could simply remove the emails in 2) after archiving its
contents in my reference system.  But, what about the emails in 3) and
4)?  How do you store an email that you will eventually answer if not
in an mbox?