How do I paste into tinytinymce the content of an email that has links in it?

Issue Summary

Hi,
My users need to be able to copy emails they receive which have links on them and paste them into the forums. The problem is that at least some email clients, such as outlook express for example, do not allow the users to see the source code of the email message which contains the url of those links (as well as the formatting).

How is it then possible to paste such emails and still retain the url of the links?

thanks