diff --git a/__manifest__.py b/__manifest__.py
index 0f0bc1ae81a942705b362ac27f7124f8ccab4bb8..f79bf00e5430abb2b26c1f1fb0553fe97aca8d5d 100755
--- a/__manifest__.py
+++ b/__manifest__.py
@@ -12,6 +12,7 @@
         "cmis_field",
     ],
     "data": [
+        "datas/mail_message_subtype.xml",
         "datas/mail_data.xml",
         "views/scop_adhesion_file.xml",
     ],
diff --git a/datas/mail_message_subtype.xml b/datas/mail_message_subtype.xml
new file mode 100644
index 0000000000000000000000000000000000000000..ade10d6a4e0279bc2c33971815c6bbc513c0a855
--- /dev/null
+++ b/datas/mail_message_subtype.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <data noupdate="1">
+
+        <record id="mail_message_subtype_adhesion" model="mail.message.subtype">
+            <field name="name">Mail validation adhésion</field>
+            <field name="model">res.partner</field>
+            <field name="description">Mail envoyé à la coop pour valider l'adhésion au mouvement</field>
+            <field name="interal">True</field>
+            <field name="hidden">True</field>
+        </record>
+
+    </data>
+</odoo>
diff --git a/models/res_partner.py b/models/res_partner.py
index eb5009fa251b73bc1ec9debbd410657635f77a6d..439d56f83dba9feef45fef012a9b0f0fb3b6044b 100644
--- a/models/res_partner.py
+++ b/models/res_partner.py
@@ -47,6 +47,8 @@ class ScopAlfrescoAdhesionPartner(models.Model):
             'default_res_id': self.id,
             'default_use_template': True,
             'default_template_id': template_id.id,
+            'default_subtype_id': self.env.ref(
+                'cgscop_adhesion_alfodoo.mail_message_subtype_adhesion').id,
             'default_composition_mode': 'comment',
         }
         return {