git-email automatic --to detection?

One of my favorite features of Darcs is that users can submit patches by typing:

  darcs send -a

This will look at the repo the local copy was cloned from, find all local changesets that aren't on the remote, and email off a set of patches to the remote maintainer. It finds the email address to send to by looking at _darcs/prefs/email *on the remote*, which is roughly the same as setting an option in .git/config.

There are a couple of nice things about this:

1) Patch submitters don't have to keep track of where to send patches
for each project they work on

2) Potential submitters don't have to be notified if the submission
address changes

As far as I can tell from looking at git-send-email(1), git-format-patch(1), and git-config(1), git doesn't have this capability. Is that correct? If so, is it possible to add something like this? Would it also be possible to unify git-format-patch and git-send-email into a single command that generates and sends the patch(es)?

Thanks,

-- John