When testing uddeIM09+ I got the following email message:
vilhelm has sent you a private message at San Diego in Style.
Please log in to read it!
However, I think it would be handy if there was link to the website in the email message. That way it's just a matter of clicking on the link and login to check the message.
uddeIM send messages as text/plain, so links as used in html messages are not possible actually.
You can change the language file and add your link, e.g. www.mydomain.com" but it depends on the mail client if this URL is recognized as link and made clickable.
uddeIM & uddePF Development
CB Language Workgroup
CB 3rd Party Developer