You can't really force signing or encrypting using code, but you can set the
OriginatorDeliveryReportRequested property of a MailItem to force sending
delivery notices.

Other than that I'm not sure what you're asking for.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007
Reminder Manager, Extended Reminders, Attachment Options
http://www.slovaktech.com/products.htm


"Bila" wrote in message
...
Hello,

I need to write a small application (C#, .NET 3.5), preferably as
Outlook add-in, that would be able to distribute e-mails with
personalized content to several thousand employees of the company
(internal distribution only). Since the content is sensitive and
contains confidential information all mails need to be encrypted and
possibly signed. Outlook clients of all users are set-up to use
Microsoft Outlook Native encryption/signing. Certificates with public
keys for all users are accessible through LDAP so it is not a problem
to encrypt e-mail content with appropriate certificates, even manually
if required.
A further strict request is that all sent mails need to be "tracked"
and checked for successful delivery so that a detailed status report
can be generated after the mailing batch finishes.

My question is: what would be the most straightforward way to fulfill
these requirements, preferably (but not necessarily) by using already
provided Outlook functionality?

I have tried several approaches already (which I won't list here now
because they could possibly be misleading) but all had their
shortcomings. I'd appreciate to hear some comments/ideas/concept
suggestions from experts in this field and get some pointers to the
right direction.

I will provide further information if requested.

Thank you.

Kind regards,
Mario Bilic