I was looking for end-user solution and it works quite well for what I need.

>But it's an Outlook add-in. Wouldn't that mean that you'd have to get the customers to agree to install it? Sometimes easier said than done.
>
>>Hi Charles,
>>
>>I found free end-user Advanced Security for Outlook from http://www.mapilab.com/outlook/security/ quite usefull. Thanks for attracting my attention to it.
>>