diff --git a/app/config.py b/app/config.py
index f1c1df76a..65dee5bc3 100644
--- a/app/config.py
+++ b/app/config.py
@@ -189,11 +189,12 @@ class Config(object):
             'schedule': crontab(hour=0, minute=20),
             'options': {'queue': QueueNames.PERIODIC}
         },
-        'delete-letter-notifications': {
-            'task': 'delete-letter-notifications',
-            'schedule': crontab(hour=0, minute=40),
-            'options': {'queue': QueueNames.PERIODIC}
-        },
+        # Suspending the scheduled job to delete letter notifications, because there is a problem with the provider.
+        # 'delete-letter-notifications': {
+        #     'task': 'delete-letter-notifications',
+        #     'schedule': crontab(hour=0, minute=40),
+        #     'options': {'queue': QueueNames.PERIODIC}
+        # },
         'delete-inbound-sms': {
             'task': 'delete-inbound-sms',
             'schedule': crontab(hour=1, minute=0),