diff --git a/scripts/populate_notification_subscriptions.py b/scripts/populate_notification_subscriptions.py
new file mode 100644
index 00000000000..f9da312f6e4
--- /dev/null
+++ b/scripts/populate_notification_subscriptions.py
@@ -0,0 +1,111 @@
+import django
+django.setup()
+
+from website.app import init_app
+init_app(routes=False)
+
+from framework.celery_tasks import app as celery_app
+from django.contrib.contenttypes.models import ContentType
+from django.db.models import Count, F, OuterRef, Subquery, IntegerField, CharField
+from django.db.models.functions import Cast
+from osf.models import OSFUser, Node, NotificationSubscription, NotificationType
+
+
+@celery_app.task(name='scripts.populate_notification_subscriptions')
+def populate_notification_subscriptions():
+    created = 0
+    user_file_nt = NotificationType.Type.USER_FILE_UPDATED.instance
+    review_nt = NotificationType.Type.REVIEWS_SUBMISSION_STATUS.instance
+    node_file_nt = NotificationType.Type.NODE_FILE_UPDATED.instance
+
+    user_ct = ContentType.objects.get_for_model(OSFUser)
+    node_ct = ContentType.objects.get_for_model(Node)
+
+    reviews_qs = OSFUser.objects.exclude(subscriptions__notification_type__name=NotificationType.Type.REVIEWS_SUBMISSION_STATUS).distinct('id')
+    files_qs = OSFUser.objects.exclude(subscriptions__notification_type__name=NotificationType.Type.USER_FILE_UPDATED).distinct('id')
+
+    node_notifications_sq = (
+        NotificationSubscription.objects.filter(
+            content_type=node_ct,
+            notification_type=node_file_nt,
+            object_id=Cast(OuterRef('pk'), CharField()),
+        ).values(
+            'object_id'
+        ).annotate(
+            cnt=Count('id')
+        ).values('cnt')[:1]
+    )
+
+    nodes_qs = (
+        Node.objects
+        .annotate(
+            contributors_count=Count('_contributors', distinct=True),
+            notifications_count=Subquery(
+                node_notifications_sq,
+                output_field=IntegerField(),
+            ),
+        ).exclude(contributors_count=F('notifications_count'))
+    )
+
+    print(f"Creating REVIEWS_SUBMISSION_STATUS subscriptions for {reviews_qs.count()} users.")
+    for id, user in enumerate(reviews_qs, 1):
+        print(f"Processing user {id} / {reviews_qs.count()}")
+        try:
+            _, is_created = NotificationSubscription.objects.get_or_create(
+                notification_type=review_nt,
+                user=user,
+                content_type=user_ct,
+                object_id=user.id,
+                defaults={
+                    'message_frequency': 'none',
+                },
+            )
+            if is_created:
+                created += 1
+        except Exception as exeption:
+            print(exeption)
+            continue
+
+    print(f"Creating USER_FILE_UPDATED subscriptions for {files_qs.count()} users.")
+    for id, user in enumerate(files_qs, 1):
+        print(f"Processing user {id} / {files_qs.count()}")
+        try:
+            _, is_created = NotificationSubscription.objects.get_or_create(
+                notification_type=user_file_nt,
+                user=user,
+                content_type=user_ct,
+                object_id=user.id,
+                defaults={
+                        'message_frequency': 'none',
+                    },
+            )
+            if is_created:
+                created += 1
+        except Exception as exeption:
+            print(exeption)
+            continue
+
+    print(f"Creating NODE_FILE_UPDATED subscriptions for {nodes_qs.count()} nodes.")
+    for id, node in enumerate(nodes_qs, 1):
+        print(f"Processing node {id} / {nodes_qs.count()}")
+        for contributor in node.contributors.all():
+            try:
+                _, is_created = NotificationSubscription.objects.get_or_create(
+                    notification_type=node_file_nt,
+                    user=contributor,
+                    content_type=node_ct,
+                    object_id=node.id,
+                    defaults={
+                        'message_frequency': 'none',
+                    },
+                )
+                if is_created:
+                    created += 1
+            except Exception as exeption:
+                print(exeption)
+                continue
+
+    print(f"Created {created} subscriptions")
+
+if __name__ == '__main__':
+    populate_notification_subscriptions.delay()
diff --git a/website/settings/defaults.py b/website/settings/defaults.py
index 2a82bb820ca..d09e583c181 100644
--- a/website/settings/defaults.py
+++ b/website/settings/defaults.py
@@ -450,6 +450,7 @@ class CeleryConfig:
         'osf.management.commands.monthly_reporters_go',
         'osf.management.commands.ingest_cedar_metadata_templates',
         'osf.metrics.reporters',
+        'scripts.populate_notification_subscriptions',
     }
 
     med_pri_modules = {
@@ -578,6 +579,7 @@ class CeleryConfig:
         'osf.management.commands.monthly_reporters_go',
         'osf.external.spam.tasks',
         'api.share.utils',
+        'scripts.populate_notification_subscriptions',
     )
 
     # Modules that need metrics and release requirements