diff --git a/.github/workflows/prepare-for-staging-deploy.yml b/.github/workflows/prepare-for-staging-deploy.yml
index 8eeafc376e..cdf27f7832 100644
--- a/.github/workflows/prepare-for-staging-deploy.yml
+++ b/.github/workflows/prepare-for-staging-deploy.yml
@@ -78,6 +78,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [generate-tag-names, build-transformer-image, build-user-transformer-image]
     env:
+      TF_IMAGE_REPOSITORY: rudderstack/rudder-transformer
       TAG_NAME: ${{ needs.generate-tag-names.outputs.tag_name }}
       UT_TAG_NAME: ${{ needs.generate-tag-names.outputs.tag_name_ut }}
     steps:
@@ -113,6 +114,7 @@ jobs:
             git checkout -b $BRANCH_NAME
 
             cd helm-charts/shared-services/per-az/environment/staging
+            yq eval -i ".rudder-transformer.image.repository=\"$TF_IMAGE_REPOSITORY\"" staging.yaml
             yq eval -i ".rudder-transformer.image.tag=\"$TAG_NAME\"" staging.yaml
             yq eval -i ".user-transformer.image.tag=\"$TAG_NAME\"" staging.yaml
             git add staging.yaml
diff --git a/src/util/prometheus.js b/src/util/prometheus.js
index c8dd55068b..a4c12e4ea8 100644
--- a/src/util/prometheus.js
+++ b/src/util/prometheus.js
@@ -520,6 +520,12 @@ class Prometheus {
         type: 'counter',
         labelNames: ['destination_id'],
       },
+      {
+        name: 'mailjet_packing_size',
+        help: 'mailjet_packing_size',
+        type: 'gauge',
+        labelNames: ['group'],
+      },
       {
         name: 'hs_batch_size',
         help: 'hs_batch_size',
diff --git a/src/v0/destinations/mailjet/transform.js b/src/v0/destinations/mailjet/transform.js
index 78b4f766d1..0a742b4cf7 100644
--- a/src/v0/destinations/mailjet/transform.js
+++ b/src/v0/destinations/mailjet/transform.js
@@ -1,5 +1,6 @@
 const lodash = require('lodash');
 const { TransformationError, InstrumentationError } = require('@rudderstack/integrations-lib');
+const stats = require('../../../util/stats');
 const {
   getSuccessRespEvents,
   defaultRequestConfig,
@@ -105,6 +106,9 @@ const batchEvents = (successRespList) => {
     const eventChunks = lodash.chunk(eventGroups[combination], MAX_BATCH_SIZE);
     // eventChunks = [[e1,e2,e3,..batchSize],[e1,e2,e3,..batchSize]..]
     eventChunks.forEach((chunk) => {
+      stats.gauge('mailjet_packing_size', chunk.length, {
+        group: combination,
+      });
       const batchEventResponse = generateBatchedPaylaodForArray(chunk, combination);
       batchedResponseList.push(
         getSuccessRespEvents(