diff --git a/addons/survey/tests/test_survey_invite.py b/addons/survey/tests/test_survey_invite.py
index ca4307bc46e..6a93ee45d56 100644
--- a/addons/survey/tests/test_survey_invite.py
+++ b/addons/survey/tests/test_survey_invite.py
@@ -194,3 +194,30 @@ class TestSurveyInvite(common.TestSurveyCommon):
             set(answers.mapped('email')),
             set([self.user_emp.email]))
         self.assertEqual(answers.mapped('partner_id'), self.user_emp.partner_id)
+
+    def test_survey_invite_token_by_email_nosignup(self):
+        """
+        Case: have multiples partners with the same email address
+        If I set one email address, I expect one email to be sent
+        """
+
+        first_partner = self.env['res.partner'].create({
+            'name': 'Test 1',
+            'email': 'test@example.com',
+        })
+
+        self.env['res.partner'].create({
+            'name': 'Test 2',
+            'email': '"Raoul Poilvache" <TEST@example.COM>',
+        })
+
+        self.survey.write({'access_mode': 'token', 'users_login_required': False})
+        action = self.survey.action_send_survey()
+        invite_form = Form(self.env[action['res_model']].with_context(action['context']))
+        invite_form.emails = 'test@example.com'
+        invite = invite_form.save()
+        invite.action_invite()
+
+        answers = self.env['survey.user_input'].search([('survey_id', '=', self.survey.id)])
+        self.assertEqual(len(answers), 1)
+        self.assertEqual(answers.partner_id.display_name, first_partner.display_name)
diff --git a/addons/survey/wizard/survey_invite.py b/addons/survey/wizard/survey_invite.py
index da42a9a6860..b9c6759f246 100644
--- a/addons/survey/wizard/survey_invite.py
+++ b/addons/survey/wizard/survey_invite.py
@@ -252,7 +252,8 @@ class SurveyInvite(models.TransientModel):
             partner = False
             email_normalized = tools.email_normalize(email)
             if email_normalized:
-                partner = Partner.search([('email_normalized', '=', email_normalized)])
+                limit = None if self.survey_users_login_required else 1
+                partner = Partner.search([('email_normalized', '=', email_normalized)], limit=limit)
             if partner:
                 valid_partners |= partner
             else: