Encrypting serial mails

[news.mch.sbs.de]

Hello,

I want to send encrypted serial mails using MS Word and MS Outlook.
Word 's function for sendind serial letters and serial mails works well with
Outlook,
but no encryption is possible.

I tried several configurations in [ Options | Security | Secure Emails ].
All I got was that I was forced to encrypt every email I send.

But this didn't work for serial mails which I wrote with Word. No encryption
took place with the settings above.

I'd also like to mention that I use CryptoEx as encryption tool. It has
additional paramaters for sending secure mails but not worked with serial
mails.

Has anybody experiences with this problem?
Do you know a 3rd party tools with this funcionality?

Regards,
Sönke