diff --git a/addons/website_sale/models/sale_order.py b/addons/website_sale/models/sale_order.py
index 05db43f9f4b..3411c8fade3 100644
--- a/addons/website_sale/models/sale_order.py
+++ b/addons/website_sale/models/sale_order.py
@@ -350,7 +350,7 @@ class SaleOrder(models.Model):
             'view_id': composer_form_view_id,
             'target': 'new',
             'context': {
-                'default_composition_mode': 'mass_mail',
+                'default_composition_mode': 'mass_mail' if len(self.ids) > 1 else 'comment',
                 'default_res_id': self.ids[0],
                 'default_model': 'sale.order',
                 'default_use_template': bool(template_id),