diff --git a/tests/app/delivery/test_send_to_providers.py b/tests/app/delivery/test_send_to_providers.py
index eda4edae3..107c841d5 100644
--- a/tests/app/delivery/test_send_to_providers.py
+++ b/tests/app/delivery/test_send_to_providers.py
@@ -6,9 +6,11 @@ from unittest.mock import ANY
 
 import pytest
 from flask import current_app
+# from notifications_utils.recipients import validate_and_format_phone_number
+from requests import HTTPError
 
 import app
-# from app import firetext_client, mmg_client, notification_provider_clients
+from app import aws_sns_client, notification_provider_clients
 from app.dao import notifications_dao
 from app.dao.provider_details_dao import get_provider_details_by_identifier
 from app.delivery import send_to_providers
@@ -25,16 +27,16 @@ from app.models import (
     Notification,
 )
 from app.serialised_models import SerialisedService
-from tests.app.db import (  # create_service,; create_service_with_defined_sms_sender,; create_template,
+from tests.app.db import (
     create_email_branding,
     create_notification,
     create_reply_to_email,
+    create_service,
     create_service_sms_sender,
+    create_service_with_defined_sms_sender,
+    create_template,
 )
 
-# from notifications_utils.recipients import validate_and_format_phone_number
-# from requests import HTTPError
-
 
 def setup_function(_function):
     # pytest will run this function before each test. It makes sure the
@@ -42,21 +44,21 @@ def setup_function(_function):
     send_to_providers.provider_cache.clear()
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
+@pytest.mark.skip(reason="Reenable when we have more than 1 SMS provider")
 def test_provider_to_use_should_return_random_provider(mocker, notify_db_session):
-    mmg = get_provider_details_by_identifier('mmg')
-    firetext = get_provider_details_by_identifier('firetext')
-    mmg.priority = 25
-    firetext.priority = 75
-    mock_choices = mocker.patch('app.delivery.send_to_providers.random.choices', return_value=[mmg])
+    sns = get_provider_details_by_identifier('sns')
+    other = get_provider_details_by_identifier('other')
+    sns.priority = 60
+    other.priority = 40
+    mock_choices = mocker.patch('app.delivery.send_to_providers.random.choices', return_value=[sns])
 
-    ret = send_to_providers.provider_to_use('sms', international=False)
+    ret = send_to_providers.provider_to_use('sms', international=True)
 
-    mock_choices.assert_called_once_with([mmg, firetext], weights=[25, 75])
-    assert ret.name == 'mmg'
+    mock_choices.assert_called_once_with([sns, other], weights=[60, 40])
+    assert ret.name == 'sns'
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
+@pytest.mark.skip(reason="Reenable when we have more than 1 SMS provider")
 def test_provider_to_use_should_cache_repeated_calls(mocker, notify_db_session):
     mock_choices = mocker.patch(
         'app.delivery.send_to_providers.random.choices',
@@ -72,85 +74,78 @@ def test_provider_to_use_should_cache_repeated_calls(mocker, notify_db_session):
     assert len(mock_choices.call_args_list) == 1
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 @pytest.mark.parametrize('international_provider_priority', (
     # Since there’s only one international provider it should always
     # be used, no matter what its priority is set to
     0, 50, 100,
 ))
-def test_provider_to_use_should_only_return_mmg_for_international(
+def test_provider_to_use_should_only_return_sns_for_international(
     mocker,
     notify_db_session,
     international_provider_priority,
 ):
-    mmg = get_provider_details_by_identifier('mmg')
-    mmg.priority = international_provider_priority
-    mock_choices = mocker.patch('app.delivery.send_to_providers.random.choices', return_value=[mmg])
+    sns = get_provider_details_by_identifier('sns')
+    sns.priority = international_provider_priority
 
     ret = send_to_providers.provider_to_use('sms', international=True)
 
-    mock_choices.assert_called_once_with([mmg], weights=[100])
-    assert ret.name == 'mmg'
+    assert ret.name == 'sns'
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
+@pytest.mark.skip(reason="Reenable when we have more than 1 SMS provider")
 def test_provider_to_use_should_only_return_active_providers(mocker, restore_provider_details):
-    mmg = get_provider_details_by_identifier('mmg')
-    firetext = get_provider_details_by_identifier('firetext')
-    mmg.active = False
-    mock_choices = mocker.patch('app.delivery.send_to_providers.random.choices', return_value=[firetext])
+    sns = get_provider_details_by_identifier('sns')
+    other = get_provider_details_by_identifier('other')
+    sns.active = False
+    other.active = True
 
     ret = send_to_providers.provider_to_use('sms')
 
-    mock_choices.assert_called_once_with([firetext], weights=[100])
-    assert ret.name == 'firetext'
+    assert ret.name == 'other'
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_provider_to_use_raises_if_no_active_providers(mocker, restore_provider_details):
-    mmg = get_provider_details_by_identifier('mmg')
-    mmg.active = False
+    sns = get_provider_details_by_identifier('sns')
+    sns.active = False
 
     with pytest.raises(Exception):
-        send_to_providers.provider_to_use('sms', international=True)
+        send_to_providers.provider_to_use('sms')
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_should_send_personalised_template_to_correct_sms_provider_and_persist(
-#     sample_sms_template_with_html,
-#     mocker
-# ):
-#     db_notification = create_notification(template=sample_sms_template_with_html,
-#                                           to_field="+447234123123", personalisation={"name": "Jo"},
-#                                           status='created',
-#                                           reply_to_text=sample_sms_template_with_html.service.get_default_sms_sender(),
-#                                           normalised_to="447234123123"
-#                                           )
+def test_should_send_personalised_template_to_correct_sms_provider_and_persist(
+    sample_sms_template_with_html,
+    mocker
+):
+    db_notification = create_notification(template=sample_sms_template_with_html,
+                                          to_field="5558675309", personalisation={"name": "Jo"},
+                                          status='created',
+                                          reply_to_text=sample_sms_template_with_html.service.get_default_sms_sender(),
+                                          normalised_to="5558675309"
+                                          )
 
-#     mocker.patch('app.mmg_client.send_sms')
+    mocker.patch('app.aws_sns_client.send_sms')
 
-#     send_to_providers.send_sms_to_provider(
-#         db_notification
-#     )
+    send_to_providers.send_sms_to_provider(
+        db_notification
+    )
 
-#     mmg_client.send_sms.assert_called_once_with(
-#         to="447234123123",
-#         content="Sample service: Hello Jo\nHere is <em>some HTML</em> & entities",
-#         reference=str(db_notification.id),
-#         sender=current_app.config['FROM_NUMBER'],
-#         international=False
-#     )
+    aws_sns_client.send_sms.assert_called_once_with(
+        to="5558675309",
+        content="Sample service: Hello Jo\nHere is <em>some HTML</em> & entities",
+        reference=str(db_notification.id),
+        sender=current_app.config['FROM_NUMBER'],
+        international=False
+    )
 
-#     notification = Notification.query.filter_by(id=db_notification.id).one()
+    notification = Notification.query.filter_by(id=db_notification.id).one()
 
-#     assert notification.status == 'sending'
-#     assert notification.sent_at <= datetime.utcnow()
-#     assert notification.sent_by == 'mmg'
-#     assert notification.billable_units == 1
-#     assert notification.personalisation == {"name": "Jo"}
+    assert notification.status == 'sent'
+    assert notification.sent_at <= datetime.utcnow()
+    assert notification.sent_by == 'sns'
+    assert notification.billable_units == 1
+    assert notification.personalisation == {"name": "Jo"}
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_should_send_personalised_template_to_correct_email_provider_and_persist(
     sample_email_template_with_html,
     mocker
@@ -169,7 +164,7 @@ def test_should_send_personalised_template_to_correct_email_provider_and_persist
     )
 
     app.aws_ses_client.send_email.assert_called_once_with(
-        '"Sample service" <sample.service@test.notify.com>',
+        '"Sample service" <sample.service@notify.sandbox.10x.gsa.gov>',
         'jo.smith@example.com',
         'Jo <em>some HTML</em>',
         body='Hello Jo\nThis is an email from GOV.\u200bUK with <em>some HTML</em>\n',
@@ -187,7 +182,6 @@ def test_should_send_personalised_template_to_correct_email_provider_and_persist
     assert notification.personalisation == {"name": "Jo"}
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_should_not_send_email_message_when_service_is_inactive_notifcation_is_in_tech_failure(
         sample_service, sample_notification, mocker
 ):
@@ -201,12 +195,10 @@ def test_should_not_send_email_message_when_service_is_inactive_notifcation_is_i
     assert Notification.query.get(sample_notification.id).status == 'technical-failure'
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-@pytest.mark.parametrize("client_send", ["app.mmg_client.send_sms", "app.firetext_client.send_sms"])
 def test_should_not_send_sms_message_when_service_is_inactive_notification_is_in_tech_failure(
-        sample_service, sample_notification, mocker, client_send):
+        sample_service, sample_notification, mocker):
     sample_service.active = False
-    send_mock = mocker.patch(client_send, return_value='reference')
+    send_mock = mocker.patch("app.aws_sns_client.send_sms", return_value='reference')
 
     with pytest.raises(NotificationTechnicalFailureException) as e:
         send_to_providers.send_sms_to_provider(sample_notification)
@@ -215,153 +207,148 @@ def test_should_not_send_sms_message_when_service_is_inactive_notification_is_in
     assert Notification.query.get(sample_notification.id).status == 'technical-failure'
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_send_sms_should_use_template_version_from_notification_not_latest(
-#         sample_template,
-#         mocker):
-#     db_notification = create_notification(template=sample_template, to_field='+447234123123', status='created',
-#                                           reply_to_text=sample_template.service.get_default_sms_sender(),
-#                                           normalised_to='447234123123')
+def test_send_sms_should_use_template_version_from_notification_not_latest(
+        sample_template,
+        mocker):
+    db_notification = create_notification(template=sample_template, to_field='5558675309', status='created',
+                                          reply_to_text=sample_template.service.get_default_sms_sender(),
+                                          normalised_to='5558675309')
 
-#     mocker.patch('app.mmg_client.send_sms')
+    mocker.patch('app.aws_sns_client.send_sms')
 
-#     version_on_notification = sample_template.version
-#     expected_template_id = sample_template.id
+    version_on_notification = sample_template.version
+    expected_template_id = sample_template.id
 
-#     # Change the template
-#     from app.dao.templates_dao import (
-#         dao_get_template_by_id,
-#         dao_update_template,
-#     )
-#     sample_template.content = sample_template.content + " another version of the template"
-#     dao_update_template(sample_template)
-#     t = dao_get_template_by_id(sample_template.id)
-#     assert t.version > version_on_notification
+    # Change the template
+    from app.dao.templates_dao import (
+        dao_get_template_by_id,
+        dao_update_template,
+    )
+    sample_template.content = sample_template.content + " another version of the template"
+    dao_update_template(sample_template)
+    t = dao_get_template_by_id(sample_template.id)
+    assert t.version > version_on_notification
 
-#     send_to_providers.send_sms_to_provider(
-#         db_notification
-#     )
+    send_to_providers.send_sms_to_provider(
+        db_notification
+    )
 
-#     mmg_client.send_sms.assert_called_once_with(
-#         to=validate_and_format_phone_number("+447234123123"),
-#         content="Sample service: This is a template:\nwith a newline",
-#         reference=str(db_notification.id),
-#         sender=current_app.config['FROM_NUMBER'],
-#         international=False
-#     )
+    aws_sns_client.send_sms.assert_called_once_with(
+        to="5558675309",
+        content="Sample service: This is a template:\nwith a newline",
+        reference=str(db_notification.id),
+        sender=current_app.config['FROM_NUMBER'],
+        international=False
+    )
 
-#     t = dao_get_template_by_id(expected_template_id)
+    t = dao_get_template_by_id(expected_template_id)
 
-#     persisted_notification = notifications_dao.get_notification_by_id(db_notification.id)
-#     assert persisted_notification.to == db_notification.to
-#     assert persisted_notification.template_id == expected_template_id
-#     assert persisted_notification.template_version == version_on_notification
-#     assert persisted_notification.template_version != t.version
-#     assert persisted_notification.status == 'sending'
-#     assert not persisted_notification.personalisation
+    persisted_notification = notifications_dao.get_notification_by_id(db_notification.id)
+    assert persisted_notification.to == db_notification.to
+    assert persisted_notification.template_id == expected_template_id
+    assert persisted_notification.template_version == version_on_notification
+    assert persisted_notification.template_version != t.version
+    assert persisted_notification.status == 'sent'
+    assert not persisted_notification.personalisation
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# @pytest.mark.parametrize('research_mode,key_type', [
-#     (True, KEY_TYPE_NORMAL),
-#     (False, KEY_TYPE_TEST)
-# ])
-# def test_should_call_send_sms_response_task_if_research_mode(
-#         notify_db_session, sample_service, sample_notification, mocker, research_mode, key_type
-# ):
-#     mocker.patch('app.mmg_client.send_sms')
-#     mocker.patch('app.delivery.send_to_providers.send_sms_response')
+@pytest.mark.parametrize('research_mode,key_type', [
+    (True, KEY_TYPE_NORMAL),
+    (False, KEY_TYPE_TEST)
+])
+def test_should_call_send_sms_response_task_if_research_mode(
+        notify_db_session, sample_service, sample_notification, mocker, research_mode, key_type
+):
+    mocker.patch('app.aws_sns_client.send_sms')
+    mocker.patch('app.delivery.send_to_providers.send_sms_response')
 
-#     if research_mode:
-#         sample_service.research_mode = True
-#         notify_db_session.add(sample_service)
-#         notify_db_session.commit()
+    if research_mode:
+        sample_service.research_mode = True
+        notify_db_session.add(sample_service)
+        notify_db_session.commit()
 
-#     sample_notification.key_type = key_type
+    sample_notification.key_type = key_type
 
-#     send_to_providers.send_sms_to_provider(
-#         sample_notification
-#     )
-#     assert not mmg_client.send_sms.called
+    send_to_providers.send_sms_to_provider(
+        sample_notification
+    )
+    assert not aws_sns_client.send_sms.called
 
-#     app.delivery.send_to_providers.send_sms_response.assert_called_once_with(
-#         'mmg', str(sample_notification.id), sample_notification.to
-#     )
+    app.delivery.send_to_providers.send_sms_response.assert_called_once_with(
+        'sns', str(sample_notification.id), sample_notification.to
+    )
 
-#     persisted_notification = notifications_dao.get_notification_by_id(sample_notification.id)
-#     assert persisted_notification.to == sample_notification.to
-#     assert persisted_notification.template_id == sample_notification.template_id
-#     assert persisted_notification.status == 'sending'
-#     assert persisted_notification.sent_at <= datetime.utcnow()
-#     assert persisted_notification.sent_by == 'mmg'
-#     assert not persisted_notification.personalisation
+    persisted_notification = notifications_dao.get_notification_by_id(sample_notification.id)
+    assert persisted_notification.to == sample_notification.to
+    assert persisted_notification.template_id == sample_notification.template_id
+    assert persisted_notification.status == 'sent'
+    assert persisted_notification.sent_at <= datetime.utcnow()
+    assert persisted_notification.sent_by == 'sns'
+    assert not persisted_notification.personalisation
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_should_have_sending_status_if_fake_callback_function_fails(sample_notification, mocker):
-#     mocker.patch('app.delivery.send_to_providers.send_sms_response', side_effect=HTTPError)
+@pytest.mark.skip(reason="Needs updating when we get SMS delivery receipts done")
+def test_should_have_sending_status_if_fake_callback_function_fails(sample_notification, mocker):
+    mocker.patch('app.delivery.send_to_providers.send_sms_response', side_effect=HTTPError)
 
-#     sample_notification.key_type = KEY_TYPE_TEST
+    sample_notification.key_type = KEY_TYPE_TEST
 
-#     with pytest.raises(HTTPError):
-#         send_to_providers.send_sms_to_provider(
-#             sample_notification
-#         )
-#     assert sample_notification.status == 'sending'
-#     assert sample_notification.sent_by == 'mmg'
+    with pytest.raises(HTTPError):
+        send_to_providers.send_sms_to_provider(
+            sample_notification
+        )
+    assert sample_notification.status == 'sending'
+    assert sample_notification.sent_by == 'sns'
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_should_not_send_to_provider_when_status_is_not_created(
-#     sample_template,
-#     mocker
-# ):
-#     notification = create_notification(template=sample_template, status='sending')
-#     mocker.patch('app.mmg_client.send_sms')
-#     response_mock = mocker.patch('app.delivery.send_to_providers.send_sms_response')
+def test_should_not_send_to_provider_when_status_is_not_created(
+    sample_template,
+    mocker
+):
+    notification = create_notification(template=sample_template, status='sending')
+    mocker.patch('app.aws_sns_client.send_sms')
+    response_mock = mocker.patch('app.delivery.send_to_providers.send_sms_response')
 
-#     send_to_providers.send_sms_to_provider(
-#         notification
-#     )
+    send_to_providers.send_sms_to_provider(
+        notification
+    )
 
-#     app.mmg_client.send_sms.assert_not_called()
-#     response_mock.assert_not_called()
+    app.aws_sns_client.send_sms.assert_not_called()
+    response_mock.assert_not_called()
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_should_send_sms_with_downgraded_content(notify_db_session, mocker):
-#     # é, o, and u are in GSM.
-#     # ī, grapes, tabs, zero width space and ellipsis are not
-#     # ó isn't in GSM, but it is in the welsh alphabet so will still be sent
-#     msg = "a é ī o u 🍇 foo\tbar\u200bbaz((misc))…"
-#     placeholder = '∆∆∆abc'
-#     gsm_message = "?ódz Housing Service: a é i o u ? foo barbaz???abc..."
-#     service = create_service(service_name='Łódź Housing Service')
-#     template = create_template(service, content=msg)
-#     db_notification = create_notification(
-#         template=template,
-#         personalisation={'misc': placeholder}
-#     )
+def test_should_send_sms_with_downgraded_content(notify_db_session, mocker):
+    # é, o, and u are in GSM.
+    # ī, grapes, tabs, zero width space and ellipsis are not
+    # ó isn't in GSM, but it is in the welsh alphabet so will still be sent
+    msg = "a é ī o u 🍇 foo\tbar\u200bbaz((misc))…"
+    placeholder = '∆∆∆abc'
+    gsm_message = "?ódz Housing Service: a é i o u ? foo barbaz???abc..."
+    service = create_service(service_name='Łódź Housing Service')
+    template = create_template(service, content=msg)
+    db_notification = create_notification(
+        template=template,
+        personalisation={'misc': placeholder}
+    )
 
-#     mocker.patch('app.mmg_client.send_sms')
+    mocker.patch('app.aws_sns_client.send_sms')
 
-#     send_to_providers.send_sms_to_provider(db_notification)
+    send_to_providers.send_sms_to_provider(db_notification)
 
-#     mmg_client.send_sms.assert_called_once_with(
-#         to=ANY,
-#         content=gsm_message,
-#         reference=ANY,
-#         sender=ANY,
-#         international=False
-#     )
+    aws_sns_client.send_sms.assert_called_once_with(
+        to=ANY,
+        content=gsm_message,
+        reference=ANY,
+        sender=ANY,
+        international=False
+    )
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_send_sms_should_use_service_sms_sender(
         sample_service,
         sample_template,
         mocker):
-    mocker.patch('app.mmg_client.send_sms')
+    mocker.patch('app.aws_sns_client.send_sms')
 
     sms_sender = create_service_sms_sender(service=sample_service, sms_sender='123456', is_default=False)
     db_notification = create_notification(template=sample_template, reply_to_text=sms_sender.sms_sender)
@@ -371,7 +358,7 @@ def test_send_sms_should_use_service_sms_sender(
         db_notification,
     )
 
-    app.mmg_client.send_sms.assert_called_once_with(
+    app.aws_sns_client.send_sms.assert_called_once_with(
         to=ANY,
         content=ANY,
         reference=ANY,
@@ -380,7 +367,6 @@ def test_send_sms_should_use_service_sms_sender(
     )
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 @pytest.mark.parametrize('research_mode,key_type', [
     (True, KEY_TYPE_NORMAL),
     (False, KEY_TYPE_TEST)
@@ -421,7 +407,6 @@ def test_send_email_to_provider_should_call_research_mode_task_response_task_if_
     assert persisted_notification.billable_units == 0
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_send_email_to_provider_should_not_send_to_provider_when_status_is_not_created(
     sample_email_template,
     mocker
@@ -437,7 +422,6 @@ def test_send_email_to_provider_should_not_send_to_provider_when_status_is_not_c
     app.delivery.send_to_providers.send_email_response.assert_not_called()
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_send_email_should_use_service_reply_to_email(
         sample_service,
         sample_email_template,
@@ -461,7 +445,6 @@ def test_send_email_should_use_service_reply_to_email(
     )
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_get_html_email_renderer_should_return_for_normal_service(sample_service):
     options = send_to_providers.get_html_email_options(sample_service)
     assert options['govuk_banner'] is True
@@ -512,7 +495,6 @@ def test_get_html_email_renderer_with_branding_details_and_render_govuk_banner_o
     assert options == {'govuk_banner': True, 'brand_banner': False}
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_get_html_email_renderer_prepends_logo_path(notify_api):
     Service = namedtuple('Service', ['email_branding'])
     EmailBranding = namedtuple('EmailBranding', ['brand_type', 'colour', 'name', 'logo', 'text'])
@@ -593,22 +575,21 @@ def test_should_not_update_notification_if_research_mode_on_exception(
     assert update_mock.called
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# @pytest.mark.parametrize("starting_status, expected_status", [
-#     ("delivered", "delivered"),
-#     ("created", "sending"),
-#     ("technical-failure", "technical-failure"),
-# ])
-# def test_update_notification_to_sending_does_not_update_status_from_a_final_status(
-#     sample_service, notify_db_session, starting_status, expected_status
-# ):
-#     template = create_template(sample_service)
-#     notification = create_notification(template=template, status=starting_status)
-#     send_to_providers.update_notification_to_sending(
-#         notification,
-#         notification_provider_clients.get_client_by_name_and_type("mmg", "sms")
-#     )
-#     assert notification.status == expected_status
+@pytest.mark.parametrize("starting_status, expected_status", [
+    ("delivered", "delivered"),
+    ("created", "sent"),
+    ("technical-failure", "technical-failure"),
+])
+def test_update_notification_to_sending_does_not_update_status_from_a_final_status(
+    sample_service, notify_db_session, starting_status, expected_status
+):
+    template = create_template(sample_service)
+    notification = create_notification(template=template, status=starting_status)
+    send_to_providers.update_notification_to_sending(
+        notification,
+        notification_provider_clients.get_client_by_name_and_type("sns", "sms")
+    )
+    assert notification.status == expected_status
 
 
 def __update_notification(notification_to_update, research_mode, expected_status):
@@ -616,14 +597,13 @@ def __update_notification(notification_to_update, research_mode, expected_status
         notification_to_update.status = expected_status
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 @pytest.mark.parametrize('research_mode,key_type, billable_units, expected_status', [
     (True, KEY_TYPE_NORMAL, 0, 'delivered'),
-    (False, KEY_TYPE_NORMAL, 1, 'sending'),
+    (False, KEY_TYPE_NORMAL, 1, 'sent'),
     (False, KEY_TYPE_TEST, 0, 'sending'),
     (True, KEY_TYPE_TEST, 0, 'sending'),
     (True, KEY_TYPE_TEAM, 0, 'delivered'),
-    (False, KEY_TYPE_TEAM, 1, 'sending')
+    (False, KEY_TYPE_TEAM, 1, 'sent')
 ])
 def test_should_update_billable_units_and_status_according_to_research_mode_and_key_type(
     sample_template,
@@ -634,7 +614,7 @@ def test_should_update_billable_units_and_status_according_to_research_mode_and_
     expected_status
 ):
     notification = create_notification(template=sample_template, billable_units=0, status='created', key_type=key_type)
-    mocker.patch('app.mmg_client.send_sms')
+    mocker.patch('app.aws_sns_client.send_sms')
     mocker.patch('app.delivery.send_to_providers.send_sms_response',
                  side_effect=__update_notification(notification, research_mode, expected_status))
 
@@ -648,12 +628,11 @@ def test_should_update_billable_units_and_status_according_to_research_mode_and_
     assert notification.status == expected_status
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_should_set_notification_billable_units_and_reduces_provider_priority_if_sending_to_provider_fails(
     sample_notification,
     mocker,
 ):
-    mocker.patch('app.mmg_client.send_sms', side_effect=Exception())
+    mocker.patch('app.aws_sns_client.send_sms', side_effect=Exception())
     mock_reduce = mocker.patch('app.delivery.send_to_providers.dao_reduce_sms_provider_priority')
 
     sample_notification.billable_units = 0
@@ -663,119 +642,73 @@ def test_should_set_notification_billable_units_and_reduces_provider_priority_if
         send_to_providers.send_sms_to_provider(sample_notification)
 
     assert sample_notification.billable_units == 1
-    mock_reduce.assert_called_once_with('mmg', time_threshold=timedelta(minutes=1))
+    mock_reduce.assert_called_once_with('sns', time_threshold=timedelta(minutes=1))
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_should_send_sms_to_international_providers(
-#     sample_template,
-#     sample_user,
-#     mocker
-# ):
-#     mocker.patch('app.mmg_client.send_sms')
-#     mocker.patch('app.firetext_client.send_sms')
+def test_should_send_sms_to_international_providers(
+    sample_template,
+    sample_user,
+    mocker
+):
+    mocker.patch('app.aws_sns_client.send_sms')
 
-#     # set firetext to active
-#     get_provider_details_by_identifier('firetext').priority = 100
-#     get_provider_details_by_identifier('mmg').priority = 0
+    notification_international = create_notification(
+        template=sample_template,
+        to_field="+6011-17224412",
+        personalisation={"name": "Jo"},
+        status='created',
+        international=True,
+        reply_to_text=sample_template.service.get_default_sms_sender(),
+        normalised_to='601117224412'
+    )
 
-#     notification_international = create_notification(
-#         template=sample_template,
-#         to_field="+6011-17224412",
-#         personalisation={"name": "Jo"},
-#         status='created',
-#         international=True,
-#         reply_to_text=sample_template.service.get_default_sms_sender(),
-#         normalised_to='601117224412'
-#     )
+    send_to_providers.send_sms_to_provider(
+        notification_international
+    )
 
-#     send_to_providers.send_sms_to_provider(
-#         notification_international
-#     )
+    aws_sns_client.send_sms.assert_called_once_with(
+        to="601117224412",
+        content=ANY,
+        reference=str(notification_international.id),
+        sender=current_app.config['FROM_NUMBER'],
+        international=True
+    )
 
-#     mmg_client.send_sms.assert_called_once_with(
-#         to="601117224412",
-#         content=ANY,
-#         reference=str(notification_international.id),
-#         sender=current_app.config['FROM_NUMBER'],
-#         international=True
-#     )
-
-#     assert notification_international.status == 'sent'
-#     assert notification_international.sent_by == 'mmg'
+    assert notification_international.status == 'sent'
+    assert notification_international.sent_by == 'sns'
 
 
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# def test_should_send_non_international_sms_to_default_provider(
-#     sample_template,
-#     sample_user,
-#     mocker
-# ):
-#     mocker.patch('app.mmg_client.send_sms')
-#     mocker.patch('app.firetext_client.send_sms')
+@pytest.mark.parametrize('sms_sender, expected_sender, prefix_sms, expected_content', [
+    ('foo', 'foo', False, 'bar'),
+    ('foo', 'foo', True, 'Sample service: bar'),
+    # if 40604 is actually in DB then treat that as if entered manually
+    ('40604', '40604', False, 'bar'),
+    # 'testing' is the FROM_NUMBER during unit tests
+    ('testing', 'testing', True, 'Sample service: bar'),
+    ('testing', 'testing', False, 'bar'),
+])
+def test_should_handle_sms_sender_and_prefix_message(
+    mocker,
+    sms_sender,
+    prefix_sms,
+    expected_sender,
+    expected_content,
+    notify_db_session
+):
+    mocker.patch('app.aws_sns_client.send_sms')
+    service = create_service_with_defined_sms_sender(sms_sender_value=sms_sender, prefix_sms=prefix_sms)
+    template = create_template(service, content='bar')
+    notification = create_notification(template, reply_to_text=sms_sender)
 
-#     # set firetext to active
-#     get_provider_details_by_identifier('firetext').priority = 100
-#     get_provider_details_by_identifier('mmg').priority = 0
+    send_to_providers.send_sms_to_provider(notification)
 
-#     notification_uk = create_notification(
-#         template=sample_template,
-#         to_field="+447234123999",
-#         personalisation={"name": "Jo"},
-#         status='created',
-#         international=False,
-#         reply_to_text=sample_template.service.get_default_sms_sender(),
-#         normalised_to="447234123999"
-#     )
-
-#     send_to_providers.send_sms_to_provider(
-#         notification_uk
-#     )
-
-#     firetext_client.send_sms.assert_called_once_with(
-#         to="447234123999",
-#         content=ANY,
-#         reference=str(notification_uk.id),
-#         sender=current_app.config['FROM_NUMBER'],
-#         international=False
-#     )
-
-#     assert notification_uk.status == 'sending'
-#     assert notification_uk.sent_by == 'firetext'
-
-
-# @pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
-# @pytest.mark.parametrize('sms_sender, expected_sender, prefix_sms, expected_content', [
-#     ('foo', 'foo', False, 'bar'),
-#     ('foo', 'foo', True, 'Sample service: bar'),
-#     # if 40604 is actually in DB then treat that as if entered manually
-#     ('40604', '40604', False, 'bar'),
-#     # 'testing' is the FROM_NUMBER during unit tests
-#     ('testing', 'testing', True, 'Sample service: bar'),
-#     ('testing', 'testing', False, 'bar'),
-# ])
-# def test_should_handle_sms_sender_and_prefix_message(
-#     mocker,
-#     sms_sender,
-#     prefix_sms,
-#     expected_sender,
-#     expected_content,
-#     notify_db_session
-# ):
-#     mocker.patch('app.mmg_client.send_sms')
-#     service = create_service_with_defined_sms_sender(sms_sender_value=sms_sender, prefix_sms=prefix_sms)
-#     template = create_template(service, content='bar')
-#     notification = create_notification(template, reply_to_text=sms_sender)
-
-#     send_to_providers.send_sms_to_provider(notification)
-
-#     mmg_client.send_sms.assert_called_once_with(
-#         content=expected_content,
-#         sender=expected_sender,
-#         to=ANY,
-#         reference=ANY,
-#         international=False
-#     )
+    aws_sns_client.send_sms.assert_called_once_with(
+        content=expected_content,
+        sender=expected_sender,
+        to=ANY,
+        reference=ANY,
+        international=False
+    )
 
 
 def test_send_email_to_provider_uses_reply_to_from_notification(
@@ -799,14 +732,13 @@ def test_send_email_to_provider_uses_reply_to_from_notification(
     )
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_send_sms_to_provider_should_use_normalised_to(
         mocker, client, sample_template
 ):
-    send_mock = mocker.patch('app.mmg_client.send_sms')
+    send_mock = mocker.patch('app.aws_sns_client.send_sms')
     notification = create_notification(template=sample_template,
-                                       to_field='+447700900855',
-                                       normalised_to='447700900855')
+                                       to_field='+15558675309',
+                                       normalised_to='5558675309')
     send_to_providers.send_sms_to_provider(notification)
     send_mock.assert_called_once_with(to=notification.normalised_to,
                                       content=ANY,
@@ -832,7 +764,6 @@ def test_send_email_to_provider_should_user_normalised_to(
                                       reply_to_address=notification.reply_to_text)
 
 
-@pytest.mark.skip(reason="Needs updating for TTS: Update with new providers")
 def test_send_sms_to_provider_should_return_template_if_found_in_redis(
         mocker, client, sample_template
 ):
@@ -854,7 +785,7 @@ def test_send_sms_to_provider_should_return_template_if_found_in_redis(
         'app.dao.services_dao.dao_fetch_service_by_id'
     )
 
-    send_mock = mocker.patch('app.mmg_client.send_sms')
+    send_mock = mocker.patch('app.aws_sns_client.send_sms')
     notification = create_notification(template=sample_template,
                                        to_field='+447700900855',
                                        normalised_to='447700900855')