diff --git a/data/mail_data.xml b/data/mail_data.xml
index 0a83186d439ba185e6a13798e9abb334581e5277..51e930ba2983da221a4139037a3960474d6664e0 100644
--- a/data/mail_data.xml
+++ b/data/mail_data.xml
@@ -94,7 +94,7 @@
                 </td></tr>
                 </table>
             </field>
-            <field name="auto_delete" eval="True" />
+            <field name="auto_delete" eval="False" />
             <field name="lang">${object.lang}</field>
         </record>
 
@@ -186,7 +186,7 @@
             </table>
             </field>
             <field name="lang">${lang}</field>
-            <field name="auto_delete" eval="True" />
+            <field name="auto_delete" eval="False" />
         </record>
 
     </data>