diff --git a/src/IDF/EmailAddress.php b/src/IDF/EmailAddress.php
new file mode 100644
index 0000000..34b6e68
--- /dev/null
+++ b/src/IDF/EmailAddress.php
@@ -0,0 +1,96 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Storage of Email addresses
+ *
+ */
+class IDF_EmailAddress extends Pluf_Model
+{
+    public $_model = __CLASS__;
+
+    function init()
+    {
+        $this->_a['table'] = 'idf_emailaddresses';
+        $this->_a['model'] = __CLASS__;
+        $this->_a['cols'] = array(
+                             // It is mandatory to have an "id" column.
+                            'id' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Sequence',
+                                  //It is automatically added.
+                                  'blank' => true,
+                                  ),
+                            'user' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Foreignkey',
+                                  'model' => 'Pluf_User',
+                                  'blank' => false,
+                                  'verbose' => __('user'),
+                                  ),
+                            'address' =>
+                            array(
+                                  'type' => 'Pluf_DB_Field_Email',
+                                  'blank' => false,
+                                  'verbose' => __('email'),
+                                  'unique' => true,
+                                  ),
+                            );
+        // WARNING: Not using getSqlTable on the Pluf_User object to
+        // avoid recursion.
+        $t_users = $this->_con->pfx.'users';
+        $this->_a['views'] = array(
+                              'join_user' =>
+                              array(
+                                    'join' => 'LEFT JOIN '.$t_users
+                                    .' ON '.$t_users.'.id='.$this->_con->qn('user'),
+                                    'select' => $this->getSelect().', '
+                                    .$t_users.'.login AS login',
+                                    'props' => array('login' => 'login'),
+                                    )
+                                   );
+    }
+
+    function get_email_addresses_for_user($user)
+    {
+        $addr = $user->get_idf_emailaddress_list();
+        $addr[] = (object)array("address" => $user->email, "id" => -1, "user" => $user);
+        return $addr;
+    }
+
+    function get_user_for_email_address($email)
+    {
+        $sql = new Pluf_SQL('email=%s', array($email));
+        $users = Pluf::factory('Pluf_User')->getList(array('filter'=>$sql->gen()));
+        if ($users->count() > 0) {
+            return $users[0];
+        }
+        $sql = new Pluf_SQL('address=%s', array($email));
+        $matches = Pluf::factory('IDF_EmailAddress')->getList(array('filter'=>$sql->gen()));
+        if ($matches->count() > 0) {
+            return new Pluf_User($matches[0]->user);
+        }
+        return null;
+    }
+}
+
diff --git a/src/IDF/Migrations/16AddUserMail.php b/src/IDF/Migrations/16AddUserMail.php
new file mode 100644
index 0000000..9856339
--- /dev/null
+++ b/src/IDF/Migrations/16AddUserMail.php
@@ -0,0 +1,43 @@
+<?php
+/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+# ***** BEGIN LICENSE BLOCK *****
+# This file is part of InDefero, an open source project management application.
+# Copyright (C) 2008 Céondo Ltd and contributors.
+#
+# InDefero is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# InDefero is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+#
+# ***** END LICENSE BLOCK ***** */
+
+/**
+ * Add the new IDF_Gconf model.
+ *
+ */
+
+function IDF_Migrations_16AddUserMail_up($params=null)
+{
+    $db = Pluf::db();
+    $schema = new Pluf_DB_Schema($db);
+    $schema->model = new IDF_EmailAddress();
+    $schema->createTables();
+}
+
+function IDF_Migrations_16AddUserMail_down($params=null)
+{
+    $db = Pluf::db();
+    $schema = new Pluf_DB_Schema($db);
+    $schema->model = new IDF_EmailAddress();
+    $schema->dropTables();
+}
diff --git a/src/IDF/relations.php b/src/IDF/relations.php
index ffc2376..ea89d8d 100644
--- a/src/IDF/relations.php
+++ b/src/IDF/relations.php
@@ -44,6 +44,7 @@ $m['IDF_Commit'] = array('relate_to' => array('IDF_Project', 'Pluf_User'));
 $m['IDF_Scm_Cache_Git'] = array('relate_to' => array('IDF_Project'));
 
 $m['IDF_UserData'] = array('relate_to' => array('Pluf_User'));
+$m['IDF_EmailAddress'] = array('relate_to' => array('Pluf_User'));
 
 Pluf_Signal::connect('Pluf_Template_Compiler::construct_template_tags_modifiers',
                      array('IDF_Middleware', 'updateTemplateTagsModifiers'));