thanks for your reply, Eric, I had ever tried, but it is really pain to build from QMF source.
I checked my code, the code for creating and configuring account is same with the code of meego handset email app of meego sdk. And I also test a case, I created a mail account using my app, and trigger a folder list sync, but message server said my account was not configured, then I open meego native handset email app, it loaded my account, then I trigger a sync operation, from the server observer, I can see that message server was handing the request, I can not understand this strange thing, the code was almost same.