Status of Liferay Mail Portlet

Hi Vaadin!

Tried to download the portlet mail-portlet, but received in response to this "An unexpected system error occurred.’

Do you know what *. War is the latest version of the portlet and where to find it?

What is the status otherwise, does the application work for later versions of Liferay (we use 6.0 ee) and is it free to use?

with best regards

Claes Lundahl