It says in the Home of your Project:
its difficult to find the TeamMailBox code.
Its not - I found it in the 'Open' area of OpenNTF instead of the IBM donated sub-site (/internal/home.nsf).
Its called Domino TeamMailbox, and is submitted by Brian Green 29/7/2010.
Here's the URL: Project Home for TeamMailbox
I am currently, extending this latest version 3.26 to incorporate:
Calendar, since a team is likely to get Invitations, that one want to Delegate amongst members.
A simple Request Management system on top of its basic email capabilities, to ensure Team Requests, are being assigned to members and spent time is recorded, once they are closed.
A flexible dynamic feature to define What type of Requests is expected to be handled, and how you want to follow up on them (Vertical and Horizontals, I call this semantic layer).
Its going to be in english, as the basic TeamMailbox template originally was too.
Myself, is enxtendi