Hi etresoft -
After a little more investigation, I discovered how it is possible to enable the ability to send email from a sandboxed app by way of a "com.apple.security.temporary-exception.apple-events" entitlement array with item of "com.apple.mail".
Of course, like it says, this is a TEMPORARY fix - and that capability could be revoked by Apple at any time.
I also discovered that, via WEBKIT, you can embed a "mailto:" reference in a 'webpage' that is a clickable link such that the User can click on the link and your local MAIL app will open a new message with everything pretty much all filled out. Check out "http://www.mailto.co.uk/" for some examples and inspiration.
My HTML example... slightly different from the image below... but basically the idea...
<a href="mailto:lance@drake.org?cc=lance@vuserland.com&subject=This%20is%20the%20subject&body=This%20is%20the%20body%20of%20the%20emai l">Here's a sample 'Send email' test</a>

As for the more long-term solution, I think that the APNS Push Notifications will probably fill the bill for me - although, it appears rather complicated to get that capability up and running.