Test cases: private messaging

Please develop functional test cases for the private messaging functionlity.
The following cases should be covered:
Creatin and sending PM, creatig a draft, sending a draft, reply on PM, inbox\outbox content view under different users.

Test plan page: http://jtalks.org/display/PM/Test+plan
Test case template: http://jtalks.org/display/PM/Test+Case+Template
Test case link: http://jtalks.org/display/jcommune/TC-JC-16+Creating+and+sending+new+personal+message