Comment 7 for bug 59200

"Send Link" in PR causes quite a bit of HD churn and CPU use, and then does nothing.

> This will launch whatever mail client you have configured to handle the
> mailto: protocol in GNOME.

I don't use GNOME, so now what?

Expected behavior would be either:
  a) Don't show the two menu items when there is no mail client hooked up (this
     is my preference. If I wanted my web browser to have e-mail UI, I'd be
     using Seamonkey)
  b) When clicking "send link" when no mail interface is avilable, open a web
     page or alert dialog which explains to user the problem and how to fix it.
  c) Provide UI in the prefernces (like we provide for "default browser") to
     configure what happens when "send link" is clicked. (GAIM, which I believe
     is the de facto standard GNOME IM client, provides a way to manually
     configure which browser is used for link clicking. This is no different).