Read his request again.. he wants to use emacs directly, w/o invoking
the
internal editor at all. IOW, when he hits post or followup, he doesn't
want the added step of having to hit the external editor
button/hotkey/menu-entry in the internal editor to get the external
one.
He wants to avoid the internal editor directly & go to the external one
instead.
At least that's the way I read it.
.. I don't believe it's currently possible. I think it'd be a handy
feature, as a checkbox in preferences under apps and mail, but it isn't
there yet.
Han, check to see if there's a feature request for that already in
bugzilla and if not, file one. I can't say whether this will appeal to
Charles to add right away or not, but if U R a coder, I expect a patch
would likely be welcomed..