Hi Christopher,
I have applied the patch, thanks.
Also I made the following modification:
The new function is defined as org-mac-message-insert-selected,
and then the old name org-mac-message-insert-link is introduced
as an alias. So you get your consisten function naming, and
compatibility as well.
I believe the file commentary may not be fully correct anymore,
it still mentions the old function names. I have already pushed the
new version, if you fix the commentary, please diff against that new
version.