diff --git a/odoo/addons/base/models/res_partner.py b/odoo/addons/base/models/res_partner.py
index 91de78f6d34..a6411bd36f2 100644
--- a/odoo/addons/base/models/res_partner.py
+++ b/odoo/addons/base/models/res_partner.py
@@ -8,6 +8,7 @@ import hashlib
 import pytz
 import threading
 import re
+import warnings
 
 import requests
 from collections import defaultdict
@@ -924,8 +925,7 @@ class Partner(models.Model):
         return base64.b64encode(res.content)
 
     def _email_send(self, email_from, subject, body, on_error=None):
-        for partner in self.filtered('email'):
-            tools.email_send(email_from, [partner.email], subject, body, on_error)
+        warnings.warn("Partner._email_send has not done anything but raise errors since 15.0", stacklevel=2, category=DeprecationWarning)
         return True
 
     def address_get(self, adr_pref=None):