adopted OCA file layout

base_usability/models/mail.py

@@ -0,0 +1,35 @@
+# © 2015-2016 Akretion (Alexis de Lattre <alexis.delattre@akretion.com>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import models, api
+from odoo.addons.base.models.ir_mail_server import extract_rfc2822_addresses
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+class IrMailServer(models.Model):
+    _inherit = "ir.mail_server"
+
+    @api.model
+    def send_email(
+            self, message, mail_server_id=None, smtp_server=None,
+            smtp_port=None, smtp_user=None, smtp_password=None,
+            smtp_encryption=None, smtp_debug=False, smtp_session=None):
+        # Start copy from native method
+        smtp_from = message['Return-Path'] or\
+            self._get_default_bounce_address() or message['From']
+        from_rfc2822 = extract_rfc2822_addresses(smtp_from)
+        smtp_from = from_rfc2822[-1]
+        # End copy from native method
+        logger.info(
+            "Sending email from '%s' to '%s' Cc '%s' Bcc '%s' "
+            "with subject '%s'",
+            smtp_from, message.get('To'), message.get('Cc'),
+            message.get('Bcc'), message.get('Subject'))
+        return super(IrMailServer, self).send_email(
+            message, mail_server_id=mail_server_id,
+            smtp_server=smtp_server, smtp_port=smtp_port,
+            smtp_user=smtp_user, smtp_password=smtp_password,
+            smtp_encryption=smtp_encryption, smtp_debug=smtp_debug,
+            smtp_session=smtp_session)