drupal rpx module registration mail

Question

Hi,

I have installed rpx module in drupal, i am trying to send registration mail details using providers gmail, yahoomail. mail is going properly but i cannot see password details . it is empty kindly any one help me how to send mail with details username and password .

i have used folllowing function _user_mail_notify('register_no_approval_required', $account);

in rpx_end_point function (rpx.module page)