diff --git a/app/dao/notifications_dao.py b/app/dao/notifications_dao.py
index 7c25f8d21..321a0f7d3 100644
--- a/app/dao/notifications_dao.py
+++ b/app/dao/notifications_dao.py
@@ -446,7 +446,7 @@ def dao_get_notifications_by_to_field(service_id, search_term, statuses=None):
 
     filters = [
         Notification.service_id == service_id,
-        Notification.normalised_to == normalised,
+        Notification.normalised_to.like("%{}%".format(normalised)),
         Notification.key_type != KEY_TYPE_TEST,
     ]
 
diff --git a/tests/app/dao/notification_dao/test_notification_dao.py b/tests/app/dao/notification_dao/test_notification_dao.py
index ac99e0607..41ea1ac8f 100644
--- a/tests/app/dao/notification_dao/test_notification_dao.py
+++ b/tests/app/dao/notification_dao/test_notification_dao.py
@@ -1751,6 +1751,21 @@ def test_dao_get_notifications_by_to_field_search_is_not_case_sensitive(sample_t
     assert notification.id in notification_ids
 
 
+def test_dao_get_notifications_by_to_field_matches_partial_emails(sample_template):
+    notification_1 = create_notification(
+        template=sample_template, to_field='jack@gmail.com', normalised_to='jack@gmail.com'
+    )
+    notification_2 = create_notification(
+        template=sample_template, to_field='jacque@gmail.com', normalised_to='jacque@gmail.com'
+    )
+    results = dao_get_notifications_by_to_field(notification_1.service_id, 'ack')
+    notification_ids = [notification.id for notification in results]
+
+    assert len(results) == 1
+    assert notification_1.id in notification_ids
+    assert notification_2.id not in notification_ids
+
+
 @pytest.mark.parametrize('to', [
     'not@email', '123'
 ])