So to open up the mail file use:
http://server/mail/maildb.nsf?OpenDatabase&ui=dwa_ulite
http://server/mail/maildb.nsf?OpenDatabase&ui=dwa_full for full mode
http://server/mail/maildb.nsf?OpenDatabase&ui=dwa_lite for the lite mode
If you have a server which has 8.0.1 or better and use the mail template file 8.0.2 it works ok.
There is not easy way to search but you can do a search
http://server/mail/maildb.nsf/$inbox?search&query=search,terms