Personally, I feel that if you use common sense,
Outlook can be
_almost_ as safe as Pine.
Not even close! Example: Outlook will run Javascript in the preview pane.
The problem is that when MS designed Outlook, they gave not the slightest
bit of concern to security. Since then they've patched some of the worst
problems, but they haven't fixed the overall design. As far as I can tell,
their recent claim to be focusing on security is just lip service.
I try to get all my clients to switch to Mahogany, which is free software,
or Eudora if they insist on using commercial software.
http://mahogany.sourceforge.net/