It looks like your request is implemented in PR 1.1

Contacts - Menu - Get Contacts - "Import Mail Exch. contacts"

Works for me. In the brainstorm proposal you tie this to the email cliednt. However, it makes more sense to tie it to Contacts since might want not only the email address but phone number and whatever else available to contact your office colleague.

I'm using this feature frequently to contact colleagues within Nokia. It works.

Can you brainstorm proposal be moved to Implemented?