Editing text in Emacs then pasting into something like Outlook

[Ludwig, Mark]

I need commands like M-a (sentence-forward) to maximize my
productivity when writing large swaths of text, so use Emacs for it.
I learned M-a and M-e so long ago, that sometimes my fingers will hit
one of them before I realize I'm not in Emacs....

Has anyone written code to take a region or a file of plain ASCII text
written in Emacs using classical block style (with paragraphs wrapped
as in this e-mail) and transform it into something suitable for
pasting into MS Word or Outlook as raw text?  (I manually unwrap using
M-^ and C-p interactively, starting at the end, backing up to the
beginning.)

This means two newlines before the second through Nth paragraph in my
case, because I usually use extra paragraph marks to make space before
the following paragraph.  I'm only looking for code to "unwrap" the
text; for extra credit, actually shove it into the appropriate
cross-application "clipboard" buffer.  (I copy the unwrapped region
using M-w now.)

I took a whack at rolling my own unwrap code a few years ago, but it
failed in a few cases.  I will ask for advice on it here if there is
no better existing solution.  Please let me know of existing solutions
to this problem.  I happen to be running Emacs on Windows, but really
want a solution for all platforms, because I want this sort of thing
on UNIX periodically too.

Oh, one of the finer points here is dealing with sentences that end at
the end of a line.  (I use the traditional Emacs default, so of
course, I consistently want two spaces between paragraphs.)

Thanks!
Mark Ludwig