diff --git a/include/class.config.php b/include/class.config.php
index fd03f9c2ee38ba4b7278dc0dfc1b9dc7fd90f9e6..68704cd7b65523acb6f5610746b4e9741847c962 100644
--- a/include/class.config.php
+++ b/include/class.config.php
@@ -151,6 +151,8 @@ class OsticketConfig extends Config {
         'system_language' =>    'en_US',
         'default_storage_bk' => 'D',
         'allow_client_updates' => false,
+        'message_autoresponder_collabs' => true,
+        'add_email_collabs' => true,
     );
 
     function OsticketConfig($section=null) {
@@ -531,6 +533,10 @@ class OsticketConfig extends Config {
         return ($this->get('use_email_priority'));
     }
 
+    function addCollabsViaEmail() {
+        return ($this->get('add_email_collabs'));
+    }
+
     function getAdminEmail() {
          return $this->get('admin_email');
     }
@@ -560,6 +566,10 @@ class OsticketConfig extends Config {
         return ($this->get('message_autoresponder'));
     }
 
+    function notifyCollabsONNewMessage() {
+        return ($this->get('message_autoresponder_collabs'));
+    }
+
     function notifyONNewStaffTicket() {
         return ($this->get('ticket_notice_active'));
     }
@@ -874,7 +884,6 @@ class OsticketConfig extends Config {
             'default_sla_id'=>$vars['default_sla_id'],
             'max_open_tickets'=>$vars['max_open_tickets'],
             'autolock_minutes'=>$vars['autolock_minutes'],
-            'use_email_priority'=>isset($vars['use_email_priority'])?1:0,
             'enable_captcha'=>isset($vars['enable_captcha'])?1:0,
             'auto_claim_tickets'=>isset($vars['auto_claim_tickets'])?1:0,
             'show_assigned_tickets'=>isset($vars['show_assigned_tickets'])?1:0,
@@ -922,6 +931,8 @@ class OsticketConfig extends Config {
             'enable_auto_cron'=>isset($vars['enable_auto_cron'])?1:0,
             'enable_mail_polling'=>isset($vars['enable_mail_polling'])?1:0,
             'strip_quoted_reply'=>isset($vars['strip_quoted_reply'])?1:0,
+            'use_email_priority'=>isset($vars['use_email_priority'])?1:0,
+            'add_email_collabs'=>isset($vars['add_email_collabs'])?1:0,
             'reply_separator'=>$vars['reply_separator'],
          ));
     }
@@ -992,6 +1003,7 @@ class OsticketConfig extends Config {
         return $this->updateAll(array(
             'ticket_autoresponder'=>$vars['ticket_autoresponder'],
             'message_autoresponder'=>$vars['message_autoresponder'],
+            'message_autoresponder_collabs'=>$vars['message_autoresponder_collabs'],
             'ticket_notice_active'=>$vars['ticket_notice_active'],
             'overlimit_notice_active'=>$vars['overlimit_notice_active'],
         ));
diff --git a/include/class.ticket.php b/include/class.ticket.php
index 27908b5fe2ecb7a65d86282b421cb2d082e2e68d..38dac6ca59d86e19f6d9192114fe8bcbe8376cd8 100644
--- a/include/class.ticket.php
+++ b/include/class.ticket.php
@@ -1548,6 +1548,7 @@ class Ticket {
 
         //Add email recipients as collaborators...
         if ($vars['recipients']
+                && (strtolower($origin) != 'email' || ($cfg && $cfg->addCollabsViaEmail()))
                 //Only add if we have a matched local address
                 && $vars['to-email-id']) {
             //New collaborators added by other collaborators are disable --
@@ -1584,6 +1585,9 @@ class Ticket {
 
         $this->onMessage($message, $autorespond); //must be called b4 sending alerts to staff.
 
+        if ($autorespond && $cfg && $cfg->notifyCollabsONNewMessage())
+            $this->notifyCollaborators($message, array('signature' => ''));
+
         $dept = $this->getDept();
 
 
@@ -1627,8 +1631,6 @@ class Ticket {
             }
         }
 
-        $this->notifyCollaborators($message, array('signature' => ''));
-
         return $message;
     }
 
diff --git a/include/i18n/en_US/help/tips/settings.autoresponder.yaml b/include/i18n/en_US/help/tips/settings.autoresponder.yaml
index 89f0d6faf51216be6524299bbc8fe7711cb894c1..8f764de6f48595dfa281c26a3542b52106d8a9b4 100644
--- a/include/i18n/en_US/help/tips/settings.autoresponder.yaml
+++ b/include/i18n/en_US/help/tips/settings.autoresponder.yaml
@@ -34,17 +34,28 @@ new_staff_ticket:
 new_message:
     title: New Message Confirmation
     content: >
-        Confirmation notice sent when a new message is appended to an
-        existing ticket
+        Send a confirmation receipt to the message submitter when a new
+        message is appended to an existing ticket.
     links:
       - title: Default New Message Confirmation Template
         href: /scp/templates.php?default_for=message.autoresp
 
+collaborators:
+    title: New Activity Notice
+    content: >
+        Broadcast messages received from message submitter to all other
+        participants on the ticket.
+
 overlimit_notice:
     title: Overlimit Notice
     content: >
-        Ticket denied notice sent to user on limit violation. Admin gets
-        alerts on <em>ALL</em> denials by default
+        Send ticket denied notice to <offending> user when the <em>maximum
+        open tickets</em> limit is reached. Admin gets alerts on
+        <em>ALL</em> denials by default
     links:
       - title: Default Overlimit Notice Template
         href: /scp/templates.php?default_for=ticket.overlimit
+
+      - title: Set <em>Maximum Open Tickets</em>
+        href: /scp/settings?t=tickets
+
diff --git a/include/i18n/en_US/help/tips/settings.email.yaml b/include/i18n/en_US/help/tips/settings.email.yaml
index fa3ddc043919d4de30038208d9eb588097b7f39b..ce58aa7999059ec07ade6244875616ed0ab8dc59 100644
--- a/include/i18n/en_US/help/tips/settings.email.yaml
+++ b/include/i18n/en_US/help/tips/settings.email.yaml
@@ -81,3 +81,19 @@ enable_autocron_poll:
         periodically run cleanup routines called the auto-cron. This setting
         enables fetching email during this cleanup.
 
+use_email_priority:
+    title: Honor Email Priority
+    content: >
+        Honor the priority flag set in incoming email. If enabled, the
+        priority of new tickets will be set by the priority of the email
+        used to create them, if available.
+
+add_email_collabs:
+    title: Email Collaborators
+    content: >
+        Add participants included in the <code><strong>To</strong></code> and
+        <code><strong>Cc</strong></code> fields of email as ticket
+        collaborators<br>
+        <br>
+        <em>Collaborators can always be added manually by staff members when
+        viewing a ticket.</em>
diff --git a/include/staff/settings-autoresp.inc.php b/include/staff/settings-autoresp.inc.php
index 9123164c6a972a28a0e1a8a07a3d3de9a6b7f90e..927bc56a5b3c94ffb0ea14835b6682c99574014f 100644
--- a/include/staff/settings-autoresp.inc.php
+++ b/include/staff/settings-autoresp.inc.php
@@ -16,36 +16,45 @@
         <tr>
             <td width="160">New Ticket:</td>
             <td>
-                <input type="radio" name="ticket_autoresponder"  value="1"   <?php echo $config['ticket_autoresponder']?'checked="checked"':''; ?> /><b>Enable</b>
-                <input type="radio" name="ticket_autoresponder"  value="0"   <?php echo !$config['ticket_autoresponder']?'checked="checked"':''; ?> />Disable
-                &nbsp;
+                <input type="checkbox" name="ticket_autoresponder" <?php
+echo $config['ticket_autoresponder'] ? 'checked="checked"' : ''; ?>/>
+                Ticket Owner&nbsp;
                 <i class="help-tip icon-question-sign" href="#new_ticket"></i>
             </td>
         </tr>
         <tr>
-            <td width="160">New Ticket by staff:</td>
+            <td width="160">New Ticket by Staff:</td>
             <td>
-                <input type="radio" name="ticket_notice_active"  value="1"   <?php echo $config['ticket_notice_active']?'checked="checked"':''; ?> /><b>Enable</b>
-                <input type="radio" name="ticket_notice_active"  value="0"   <?php echo !$config['ticket_notice_active']?'checked="checked"':''; ?> />Disable
-                &nbsp;
+                <input type="checkbox" name="ticket_notice_active" <?php
+echo $config['ticket_notice_active'] ? 'checked="checked"' : ''; ?>/>
+                Ticket Owner&nbsp;
                 <i class="help-tip icon-question-sign" href="#new_staff_ticket"></i>
             </td>
         </tr>
         <tr>
-            <td width="160">New Message:</td>
+            <td width="160" rowspan="2">New Message:</td>
             <td>
-                <input type="radio" name="message_autoresponder"  value="1"   <?php echo $config['message_autoresponder']?'checked="checked"':''; ?> /><b>Enable</b>
-                <input type="radio" name="message_autoresponder"  value="0"   <?php echo !$config['message_autoresponder']?'checked="checked"':''; ?> />Disable
-                &nbsp;
+                <input type="checkbox" name="message_autoresponder" <?php
+echo $config['message_autoresponder'] ? 'checked="checked"' : ''; ?>/>
+                Submitter: Send receipt confirmation&nbsp;
                 <i class="help-tip icon-question-sign" href="#new_message"></i>
             </td>
         </tr>
         <tr>
-            <td width="160">Overlimit notice:</td>
             <td>
-                <input type="radio" name="overlimit_notice_active"  value="1"   <?php echo $config['overlimit_notice_active']?'checked="checked"':''; ?> /><b>Enable</b>
-                <input type="radio" name="overlimit_notice_active"  value="0"   <?php echo !$config['overlimit_notice_active']?'checked="checked"':''; ?> />Disable
-                &nbsp;
+                <input type="checkbox" name="message_autoresponder_collabs" <?php
+echo $config['message_autoresponder_collabs'] ? 'checked="checked"' : ''; ?>/>
+                Participants: Send new activity notice&nbsp;
+                <i class="help-tip icon-question-sign" href="#collaborators"></i>
+                </div>
+            </td>
+        </tr>
+        <tr>
+            <td width="160">Overlimit Notice:</td>
+            <td>
+                <input type="checkbox" name="overlimit_notice_active" <?php
+echo $config['overlimit_notice_active'] ? 'checked="checked"' : ''; ?>/>
+                Ticket Submitter&nbsp;
                 <i class="help-tip icon-question-sign" href="#overlimit_notice"></i>
             </td>
         </tr>
diff --git a/include/staff/settings-emails.inc.php b/include/staff/settings-emails.inc.php
index 0ccbb959046a34b867ef68c324dc8adeffa3b18d..b4c95d0247d77b0199e60ca796d21aa433a26835 100644
--- a/include/staff/settings-emails.inc.php
+++ b/include/staff/settings-emails.inc.php
@@ -109,6 +109,21 @@ if(!defined('OSTADMININC') || !$thisstaff || !$thisstaff->isAdmin() || !$config)
                 &nbsp;<font class="error">&nbsp;<?php echo $errors['reply_separator']; ?></font>
             </td>
         </tr>
+        <tr>
+            <td width="180">Emailed Tickets Priority:</td>
+            <td>
+                <input type="checkbox" name="use_email_priority" value="1" <?php echo $config['use_email_priority'] ?'checked="checked"':''; ?> >
+                <em>(Use email priority when available)</em>
+                <i class="help-tip icon-question-sign" href="#use_email_priority"></i>
+            </td>
+        </tr>
+        <tr>
+            <td width="180">Accept Email Collaborators:</td>
+            <td><input type="checkbox" name="add_email_collabs" <?php
+    echo $config['add_email_collabs'] ? 'checked="checked"' : ''; ?>/>
+            Automatically add collaborators from email fields&nbsp;
+            <i class="help-tip icon-question-sign" href="#add_email_collabs"></i>
+        </tr>
         <tr><th colspan=2><em><strong>Outgoing Emails</strong>: Default email only applies to outgoing emails without SMTP setting.</em></th></tr>
         <tr><td width="180">Default Outgoing Email:</td>
             <td>
diff --git a/include/staff/settings-tickets.inc.php b/include/staff/settings-tickets.inc.php
index a1e5936e9859e1192835fa3c6b4130e5f99a436a..c3d204328c300e9f8d3235883cf52b1227a14499 100644
--- a/include/staff/settings-tickets.inc.php
+++ b/include/staff/settings-tickets.inc.php
@@ -76,13 +76,6 @@ if(!($maxfileuploads=ini_get('max_file_uploads')))
                 <em>(Minutes to lock a ticket on activity - enter 0 to disable locking)</em>
             </td>
         </tr>
-        <tr>
-                    <td width="180">Emailed Tickets Priority:</td>
-                    <td>
-                        <input type="checkbox" name="use_email_priority" value="1" <?php echo $config['use_email_priority'] ?'checked="checked"':''; ?> >
-                        <em>(Use email priority when available)</em>
-            </td>
-        </tr>
         <tr>
             <td width="180">Show Related Tickets:</td>
             <td>