diff --git a/module/mail/model.php b/module/mail/model.php
index 5ac2d7b26d..241cdd9ff5 100644
--- a/module/mail/model.php
+++ b/module/mail/model.php
@@ -650,6 +650,8 @@ class mailModel extends model
         if($objectType == 'story' or $objectType == 'bug') $suffix = empty($object->product) ? '' : ' - ' . $this->loadModel('product')->getById($object->product)->name;
         if($objectType == 'task') $suffix = empty($object->execution) ? '' : ' - ' . $this->loadModel('execution')->getById($object->execution)->name;
 
+        if($objectType == 'story') $objectType = $object->type; // 业务需求和用户需求的邮件标题不同。
+
         return strtoupper($objectType) . ' #' . $object->id . ' ' . $title . $suffix;
     }
 
diff --git a/module/message/config.php b/module/message/config.php
index c637cac386..5916742b79 100644
--- a/module/message/config.php
+++ b/module/message/config.php
@@ -1,6 +1,8 @@
 <?php
 $config->message->objectTypes = array();
 $config->message->objectTypes['product']     = array('opened', 'edited', 'closed', 'undeleted');
+if($config->enableER) $config->message->objectTypes['epic']        = array('opened', 'edited', 'commented', 'changed', 'reviewed', 'closed', 'activated', 'assigned');
+if($config->URAndSR)  $config->message->objectTypes['requirement'] = array('opened', 'edited', 'commented', 'changed', 'reviewed', 'closed', 'activated', 'assigned');
 $config->message->objectTypes['story']       = array('opened', 'edited', 'commented', 'frombug', 'changed', 'reviewed', 'closed', 'activated', 'assigned');
 $config->message->objectTypes['productplan'] = array('opened', 'edited');
 $config->message->objectTypes['project']     = array('opened', 'edited', 'started', 'delayed', 'suspended', 'closed', 'activated', 'undeleted');
@@ -13,22 +15,26 @@ $config->message->objectTypes['doc']         = array('created', 'edited');
 $config->message->objectTypes['kanbancard']  = array('created', 'edited', 'finished', 'activated', 'archived', 'restore', 'deleted', 'moved');
 
 $config->message->available = array();
-$config->message->available['mail']['story']      = $config->message->objectTypes['story'];
-$config->message->available['mail']['task']       = $config->message->objectTypes['task'];
-$config->message->available['mail']['bug']        = $config->message->objectTypes['bug'];
-$config->message->available['mail']['testtask']   = array('opened', 'edited', 'closed');
-$config->message->available['mail']['doc']        = $config->message->objectTypes['doc'];
-$config->message->available['mail']['kanbancard'] = $config->message->objectTypes['kanbancard'];
+if($config->enableER) $config->message->available['mail']['epic']        = $config->message->objectTypes['epic'];
+if($config->URAndSR)  $config->message->available['mail']['requirement'] = $config->message->objectTypes['requirement'];
+$config->message->available['mail']['story']       = $config->message->objectTypes['story'];
+$config->message->available['mail']['task']        = $config->message->objectTypes['task'];
+$config->message->available['mail']['bug']         = $config->message->objectTypes['bug'];
+$config->message->available['mail']['testtask']    = array('opened', 'edited', 'closed');
+$config->message->available['mail']['doc']         = $config->message->objectTypes['doc'];
+$config->message->available['mail']['kanbancard']  = $config->message->objectTypes['kanbancard'];
 
 $config->message->available['webhook']  = $config->message->objectTypes;
 
-$config->message->available['message']['bug']        = $config->message->objectTypes['bug'];
-$config->message->available['message']['story']      = $config->message->objectTypes['story'];
-$config->message->available['message']['task']       = $config->message->objectTypes['task'];
-$config->message->available['message']['testtask']   = $config->message->objectTypes['testtask'];
-$config->message->available['message']['todo']       = $config->message->objectTypes['todo'];
-$config->message->available['message']['doc']        = $config->message->objectTypes['doc'];
-$config->message->available['message']['kanbancard'] = $config->message->objectTypes['kanbancard'];
+$config->message->available['message']['bug']         = $config->message->objectTypes['bug'];
+if($config->enableER) $config->message->available['message']['epic']        = $config->message->objectTypes['epic'];
+if($config->URAndSR)  $config->message->available['message']['requirement'] = $config->message->objectTypes['requirement'];
+$config->message->available['message']['story']       = $config->message->objectTypes['story'];
+$config->message->available['message']['task']        = $config->message->objectTypes['task'];
+$config->message->available['message']['testtask']    = $config->message->objectTypes['testtask'];
+$config->message->available['message']['todo']        = $config->message->objectTypes['todo'];
+$config->message->available['message']['doc']         = $config->message->objectTypes['doc'];
+$config->message->available['message']['kanbancard']  = $config->message->objectTypes['kanbancard'];
 
 $config->message->typeLink = array();
 $config->message->typeLink['mail']    = 'mail|index';
diff --git a/module/message/model.php b/module/message/model.php
index d94596fd9e..5fe06807eb 100755
--- a/module/message/model.php
+++ b/module/message/model.php
@@ -82,6 +82,13 @@ class messageModel extends model
         $messageSetting = $this->config->message->setting;
         if(is_string($messageSetting)) $messageSetting = json_decode($messageSetting, true);
 
+        /* 如果是业需和用需，则使用它们的发信配置。*/
+        if($objectType == 'story')
+        {
+            $story      = $this->loadModel('story')->fetchByID($objectID);
+            $objectType = $story->type;
+        }
+
         if(isset($messageSetting['mail']))
         {
             $actions = $messageSetting['mail']['setting'];
@@ -212,10 +219,10 @@ class messageModel extends model
 
         if($toList == 'closed') $toList = '';
         if($objectType == 'feedback' && $object->status == 'replied') $toList = ',' . $object->openedBy . ',';
-        if($objectType == 'story' && $actionID)
+        if(in_array($objectType, array('story', 'epic', 'requirement')) && $actionID)
         {
             $action = $this->loadModel('action')->getById($actionID);
-            list($toList, $ccList) = $this->loadModel($objectType)->getToAndCcList($object, $action->action);
+            list($toList, $ccList) = $this->loadModel('story')->getToAndCcList($object, $action->action);
             $toList = $toList . $ccList;
         }
 
diff --git a/module/story/model.php b/module/story/model.php
index 2ed14ba3e5..dbc5452b74 100644
--- a/module/story/model.php
+++ b/module/story/model.php
@@ -3629,7 +3629,7 @@ class storyModel extends model
         $ccList = isset($story->mailto) ? str_replace(' ', '', trim($story->mailto, ',')) : '';
 
         /* If the action is changed or reviewed, mail to the project or execution team. */
-        if(strtolower($actionType) == 'changed' or strtolower($actionType) == 'reviewed')
+        if((strtolower($actionType) == 'changed' or strtolower($actionType) == 'reviewed') && $story->type == 'story')
         {
             $teamMembers = $this->getTeamMembers($story->id, $actionType);
             if($teamMembers)
diff --git a/module/story/view/sendmail.html.php b/module/story/view/sendmail.html.php
index 5282167564..f88fd79e5d 100644
--- a/module/story/view/sendmail.html.php
+++ b/module/story/view/sendmail.html.php
@@ -10,7 +10,7 @@
  * @link        https://www.zentao.net
  */
 ?>
-<?php $mailTitle = 'STORY #' . $object->id . ' ' . $object->title;?>
+<?php $mailTitle = strtoupper($object->type) . ' #' . $object->id . ' ' . $object->title;?>
 <?php include $this->app->getModuleRoot() . 'common/view/mail.header.html.php';?>
 <tr>
   <td>
@@ -18,7 +18,7 @@
       <tr>
         <td style='padding: 10px; background-color: #F8FAFE; border: none; font-size: 14px; font-weight: 500; border-bottom: 1px solid #e5e5e5;'>
           <?php $color = empty($object->color) ? '#333' : $object->color;?>
-          <?php echo html::a($domain . helper::createLink('story', 'view', "storyID=$object->id", 'html'), $mailTitle, '', "style='color: {$color}; text-decoration: underline;'");?>
+          <?php echo html::a($domain . helper::createLink($object->type, 'view', "storyID=$object->id", 'html'), $mailTitle, '', "style='color: {$color}; text-decoration: underline;'");?>
         </td>
       </tr>
     </table>