  'import' => array(
    'backend.extensions.yii-mail.models.*',
  ),
  'components' => array(
    '...',
      'mail' => array(
      'class' => 'app.extensions.yii-mail.YiiMail',
    ),
    'config'=>array(
  	'class' => 'app.extensions.yii-config.EConfig',
  	'...',
    ),
    '...',
  ),

Usage

  Yii::app()->mail->send("USER_REGISTER", array(
    "#USER_LOGIN#" => $model->login,
    "#USER_EMAIL#" => $model->email,
    "...",
  ));