I've tried to configure Mail on my Laptop and it works correctly !
Launch mail from your start menu
Then configure a new Exchange Account
Now insert your credential
After clicking next button you will get the following error, so click Advanced
Now insert the FQDN of your traveler server, check teh SSL box and click next
All done ! You have configured your WinPC to access Mail, Calendar and contacto thru your Traveler server !
Now you got your email, your folder
Your calendar from the app ( here I din't publish mine screenshot for privacy reasons but it works)
And of course you get the contacts from type ahead
And from dedicated app called People
Mail is a basic client but from my first test, appear to work quite well and could be a valid alternative for basic users that need only the basic tasks.
WARNING: this configuration is not supported yet so you can find some issue working with Mail or maybe you can have some servers issue , be careful !