diff --git a/app/config.py b/app/config.py
index 473c92222..dacda4ff7 100644
--- a/app/config.py
+++ b/app/config.py
@@ -163,8 +163,6 @@ class Config(object):
     MOU_SIGNED_ON_BEHALF_ON_BEHALF_RECEIPT_TEMPLATE_ID = '522b6657-5ca5-4368-a294-6b527703bd0b'
     MOU_NOTIFY_TEAM_ALERT_TEMPLATE_ID = 'd0e66c4c-0c50-43f0-94f5-f85b613202d4'
 
-    HIGH_VOLUME_SERVICE = '539d63a1-701d-400d-ab11-f3ee2319d4d4'
-
     BROKER_URL = 'sqs://'
     BROKER_TRANSPORT_OPTIONS = {
         'region': AWS_REGION,
@@ -334,10 +332,11 @@ class Config(object):
     FIRETEXT_INBOUND_SMS_AUTH = json.loads(os.environ.get('FIRETEXT_INBOUND_SMS_AUTH', '[]'))
     MMG_INBOUND_SMS_AUTH = json.loads(os.environ.get('MMG_INBOUND_SMS_AUTH', '[]'))
     MMG_INBOUND_SMS_USERNAME = json.loads(os.environ.get('MMG_INBOUND_SMS_USERNAME', '[]'))
-
     ROUTE_SECRET_KEY_1 = os.environ.get('ROUTE_SECRET_KEY_1', '')
     ROUTE_SECRET_KEY_2 = os.environ.get('ROUTE_SECRET_KEY_2', '')
 
+    HIGH_VOLUME_SERVICE = json.loads(os.environ.get('HIGH_VOLUME_SERVICE', '[]'))
+
     # Format is as follows:
     # {"dataset_1": "token_1", ...}
     PERFORMANCE_PLATFORM_ENDPOINTS = json.loads(os.environ.get('PERFORMANCE_PLATFORM_ENDPOINTS', '{}'))
@@ -404,6 +403,8 @@ class Test(Development):
     NOTIFY_ENVIRONMENT = 'test'
     TESTING = True
 
+    HIGH_VOLUME_SERVICE = ['941b6f9a-50d7-4742-8d50-f365ca74bf27']
+
     CSV_UPLOAD_BUCKET_NAME = 'test-notifications-csv-upload'
     TEST_LETTERS_BUCKET_NAME = 'test-test-letters'
     DVLA_RESPONSE_BUCKET_NAME = 'test.notify.com-ftp'
diff --git a/app/v2/notifications/post_notifications.py b/app/v2/notifications/post_notifications.py
index d58786f36..d43ccfcf7 100644
--- a/app/v2/notifications/post_notifications.py
+++ b/app/v2/notifications/post_notifications.py
@@ -203,7 +203,7 @@ def process_sms_or_email_notification(*, form, notification_type, api_key, templ
         simulated=simulated
     )
 
-    if str(service.id) == current_app.config.get('HIGH_VOLUME_SERVICE') and api_key.key_type == KEY_TYPE_NORMAL \
+    if str(service.id) in current_app.config.get('HIGH_VOLUME_SERVICE') and api_key.key_type == KEY_TYPE_NORMAL \
        and notification_type == EMAIL_TYPE:
         # Put GOV.UK Email notifications onto a queue
         # To take the pressure off the db for API requests put the notification for our high volume service onto a queue
diff --git a/manifest.yml.j2 b/manifest.yml.j2
index cc72ffc24..8424f56d8 100644
--- a/manifest.yml.j2
+++ b/manifest.yml.j2
@@ -81,6 +81,9 @@ applications:
       ROUTE_SECRET_KEY_2: '{{ ROUTE_SECRET_KEY_2 }}'
       CRONITOR_KEYS: '{{ CRONITOR_KEYS | tojson }}'
 
+      HIGH_VOLUME_SERVICE: '{{ HIGH_VOLUME_SERVICE | tojson }}'
+
+
       PERFORMANCE_PLATFORM_ENDPOINTS: '{{ PERFORMANCE_PLATFORM_ENDPOINTS | tojson }}'
 
       DOCUMENT_DOWNLOAD_API_HOST: '{{ DOCUMENT_DOWNLOAD_API_HOST }}'
diff --git a/tests/app/v2/notifications/test_post_notifications.py b/tests/app/v2/notifications/test_post_notifications.py
index 0b2431892..960bc4906 100644
--- a/tests/app/v2/notifications/test_post_notifications.py
+++ b/tests/app/v2/notifications/test_post_notifications.py
@@ -955,8 +955,9 @@ def test_post_email_notification_when_data_is_empty_returns_400(client, sample_s
 
 def test_post_notifications_saves_email_to_queue(client, notify_db_session, mocker):
     save_email_task = mocker.patch("app.celery.tasks.save_api_email.apply_async")
+    mock_send_task = mocker.patch('app.celery.provider_tasks.deliver_email.apply_async')
 
-    service = create_service(service_id='539d63a1-701d-400d-ab11-f3ee2319d4d4', service_name='high volume service')
+    service = create_service(service_id='941b6f9a-50d7-4742-8d50-f365ca74bf27', service_name='high volume service')
     template = create_template(service=service, content='((message))', template_type=EMAIL_TYPE)
     data = {
         "email_address": "joe.citizen@example.com",
@@ -976,14 +977,15 @@ def test_post_notifications_saves_email_to_queue(client, notify_db_session, mock
     assert json_resp['content']['body'] == "Dear citizen, have a nice day"
     assert json_resp['template']['id'] == str(template.id)
     save_email_task.assert_called_once_with([mock.ANY], queue='save-api-email-tasks')
+    assert not mock_send_task.called
     assert len(Notification.query.all()) == 0
 
 
 def test_post_notifications_doesnt_save_email_to_queue_for_test_emails(client, notify_db_session, mocker):
     save_email_task = mocker.patch("app.celery.tasks.save_api_email.apply_async")
-    mocked_send_task = mocker.patch('app.celery.provider_tasks.deliver_email.apply_async')
+    mock_send_task = mocker.patch('app.celery.provider_tasks.deliver_email.apply_async')
 
-    service = create_service(service_id='539d63a1-701d-400d-ab11-f3ee2319d4d4', service_name='high volume service')
+    service = create_service(service_id='941b6f9a-50d7-4742-8d50-f365ca74bf27', service_name='high volume service')
     # create_api_key(service=service, key_type='test')
     template = create_template(service=service, content='((message))', template_type=EMAIL_TYPE)
     data = {
@@ -1004,16 +1006,16 @@ def test_post_notifications_doesnt_save_email_to_queue_for_test_emails(client, n
     assert json_resp['id']
     assert json_resp['content']['body'] == "Dear citizen, have a nice day"
     assert json_resp['template']['id'] == str(template.id)
-    assert mocked_send_task.called
+    assert mock_send_task.called
     assert not save_email_task.called
     assert len(Notification.query.all()) == 1
 
 
 def test_post_notifications_doesnt_save_email_to_queue_for_sms(client, notify_db_session, mocker):
     save_email_task = mocker.patch("app.celery.tasks.save_api_email.apply_async")
-    mocked_send_task = mocker.patch('app.celery.provider_tasks.deliver_sms.apply_async')
+    mock_send_task = mocker.patch('app.celery.provider_tasks.deliver_sms.apply_async')
 
-    service = create_service(service_id='539d63a1-701d-400d-ab11-f3ee2319d4d4', service_name='high volume service')
+    service = create_service(service_id='941b6f9a-50d7-4742-8d50-f365ca74bf27', service_name='high volume service')
     template = create_template(service=service, content='((message))', template_type=SMS_TYPE)
     data = {
         "phone_number": '+447700900855',
@@ -1030,7 +1032,7 @@ def test_post_notifications_doesnt_save_email_to_queue_for_sms(client, notify_db
 
     assert response.status_code == 201
     assert json_resp['id']
-    assert mocked_send_task.called
+    assert mock_send_task.called
     assert not save_email_task.called
 
     assert len(Notification.query.all()) == 1