diff --git a/admin/base/settings/defaults.py b/admin/base/settings/defaults.py
index 4554355821d..f0647492f67 100644
--- a/admin/base/settings/defaults.py
+++ b/admin/base/settings/defaults.py
@@ -40,7 +40,7 @@
 CSRF_COOKIE_HTTPONLY = False
 
 ALLOWED_HOSTS = [
-    '.osf.io',
+    '.osf.io'
 ]
 
 AUTH_PASSWORD_VALIDATORS = [
diff --git a/api_tests/requests/views/test_node_request_institutional_access.py b/api_tests/requests/views/test_node_request_institutional_access.py
index 16a3ec42626..c3fdc4e111b 100644
--- a/api_tests/requests/views/test_node_request_institutional_access.py
+++ b/api_tests/requests/views/test_node_request_institutional_access.py
@@ -194,13 +194,52 @@ def test_institutional_admin_unauth_institution(self, app, project, institution_
         assert res.status_code == 403
         assert 'Institutional request access is not enabled.' in res.json['errors'][0]['detail']
 
-    @mock.patch('website.mails.send_mail')
-    def test_email_send_to_all_admins_once_on_institutional_request(self, mock_mail, app, project, url, create_payload, institutional_admin):
-        project.is_public = True
-        project.save()
-        res = app.post_json_api(url, create_payload, auth=institutional_admin.auth)
-        assert res.status_code == 201
-        assert mock_mail.call_count == 1
+        @mock.patch('api.requests.serializers.send_mail')
+        @mock.patch('osf.utils.machines.mails.send_mail')
+        def test_email_send_institutional_request_specific_email(
+                self,
+                mock_send_mail_machines,
+                mock_send_mail_serializers,
+                user_with_affiliation,
+                app,
+                project,
+                url,
+                create_payload,
+                institutional_admin,
+                institution
+        ):
+            """
+            Test that the institutional request triggers email notifications to appropriate recipients.
+            """
+            # Set up mock behaviors
+            project.is_public = True
+            project.save()
+
+            # Perform the action
+            res = app.post_json_api(url, create_payload, auth=institutional_admin.auth)
+
+            # Ensure response is successful
+            assert res.status_code == 201
+
+            assert mock_send_mail_serializers.call_count == 1
+            assert mock_send_mail_machines.call_count == 0
+
+            # Check calls for osf.utils.machines.mails.send_mail
+            mock_send_mail_serializers.assert_called_once_with(
+                to_addr=user_with_affiliation.username,
+                mail=NODE_REQUEST_INSTITUTIONAL_ACCESS_REQUEST,
+                user=user_with_affiliation,
+                bcc_addr=None,
+                reply_to=None,
+                **{
+                    'sender': institutional_admin,
+                    'recipient': user_with_affiliation,
+                    'comment': create_payload['data']['attributes']['comment'],
+                    'institution': institution,
+                    'osf_url': mock.ANY,
+                    'node': project,
+                }
+            )
 
     @mock.patch('api.requests.serializers.send_mail')
     def test_email_not_sent_without_recipient(self, mock_mail, app, project, institutional_admin, url,