diff --git a/cloudformation.yaml b/cloudformation.yaml
index 2f7d8a427..81bee6264 100644
--- a/cloudformation.yaml
+++ b/cloudformation.yaml
@@ -790,3 +790,36 @@ Resources:
         - !Ref 'TopicSendEmail'
       InsufficientDataActions:
         - !Ref 'TopicSendEmail'
+  UnsubscribeAllInactivityAlarm:
+    Type: AWS::CloudWatch::Alarm
+    Condition: IsProd
+    Properties:
+      AlarmName: !Sub
+        - '${Priority} - ${App} ${Stage} has had successful no unsubscribe all from email clients in the last hour'
+        - Priority: !FindInMap [StageVariables, AlarmPriorities, P2]
+      AlarmDescription: 'No one has successfully unsubscribed all from email clients in the last hour.'
+      Metrics:
+        - Id: totalUnsubscribeAllCount
+          Expression: unsubscribeAllCount
+          Label: 'Total unsubscribe all'
+        - Id: unsubscribeAllCount
+          MetricStat:
+            Metric:
+              Namespace: Gateway
+              MetricName: 'UnsubscribeAll::Success'
+              Dimensions:
+                - Name: Stage
+                  Value: !Ref 'Stage'
+                - Name: ApiMode
+                  Value: identity-gateway
+            Period: 3600
+            Stat: Sum
+            Unit: Count
+          ReturnData: false
+      ComparisonOperator: LessThanThreshold
+      Threshold: 1
+      EvaluationPeriods: 1
+      AlarmActions:
+        - !Ref 'TopicSendEmail'
+      InsufficientDataActions:
+        - !Ref 'TopicSendEmail'