diff --git a/addons/portal/models/portal_mixin.py b/addons/portal/models/portal_mixin.py
index 62dc8403956..ec11771c571 100644
--- a/addons/portal/models/portal_mixin.py
+++ b/addons/portal/models/portal_mixin.py
@@ -3,7 +3,7 @@
 
 from werkzeug.urls import url_encode
 
-from odoo import api, fields, models
+from odoo import api, fields, models, _
 
 
 class PortalMixin(models.AbstractModel):
@@ -18,6 +18,27 @@ class PortalMixin(models.AbstractModel):
         for record in self:
             record.portal_url = '#'
 
+    def _get_access_token_field(self):
+        """ Give the field used to fetch the customer portal access token, if
+        any. Override this method if the field holding the token is named
+        differently. """
+        return 'access_token' if 'access_token' in self else False
+
+    def _get_customer_field(self):
+        """ Give the field used to fetch the customer partner_id, if any.
+        Override this method if the field holding the token is named differently. """
+        return 'partner_id' if 'partner_id' in self else False
+
+    def _get_access_token(self):
+        """ Get the current record access token """
+        field = self._get_access_token_field()
+        return self[field] if field else False
+
+    def _get_customer(self):
+        """ Get the current record custome (res.partner record) """
+        field = self._get_customer_field()
+        return self[field] if field else self.env['res.partner']
+
     def get_share_url(self):
         self.ensure_one()
         params = {
@@ -30,3 +51,28 @@ class PortalMixin(models.AbstractModel):
             params.update(self.partner_id.signup_get_auth_param()[self.partner_id.id])
 
         return '/mail/view?' + url_encode(params)
+
+    @api.multi
+    def _notification_recipients(self, message, groups):
+        access_token = self._get_access_token()
+        customer = self._get_customer()
+
+        if access_token and customer:
+            additional_params = {
+                'access_token': self.access_token,
+            }
+            additional_params.update(customer.signup_get_auth_param()[customer.id])
+            access_link = self._notification_link_helper('view', **additional_params)
+
+            new_group = [
+                ('portal_customer', lambda partner: partner.id == customer.id, {
+                    'has_button_access': False,
+                    'button_access': {
+                        'url': access_link,
+                        'title': ('View %s') % self.env['ir.model']._get(message.model).display_name,
+                    },
+                })
+            ]
+        else:
+            new_group = []
+        return super(PortalMixin, self)._notification_recipients(message, new_group + groups)