portal web dynpro form link as email .

Dear All

The requirement goes like this:

We are developing a form in web dynpro and integerating into portal as an iview.

Whenever the user submits a new form we should send a link of the form in portal to the user as email (with some parameters like form id for the webdynpro to open the correct form)

How can build this link to the portal form dynamically and send it?

As this web dynpro application will be accessed form different portal .I do not prefer hardcoding the host or url etc.

Any help will be greatly appreciated.

PS : Portal and web bynpro are on different system..