diff --git a/CHANGELOG.md b/CHANGELOG.md
index 851b671..9371bb9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# dbt_marketo_source v0.7.2
+## Bug Fixes
+- Updated surrogate key `email_send_id` to include `primary_attribute_value_id`. The previous key was at a campaign level grain, not an email level grain. This is pertinent in the case where there are multiple emails that are part of the same campaign.
+[#26](https://github.com/fivetran/dbt_marketo_source/pull/26)
+## Contributors
+- [sfc-gh-sugupta](https://github.com/sfc-gh-sugupta) [#25](https://github.com/fivetran/dbt_marketo_source/issues/25)
 # dbt_marketo_source v0.7.1
 
 ## Bug Fixes
diff --git a/dbt_project.yml b/dbt_project.yml
index 0e91b29..8c11777 100644
--- a/dbt_project.yml
+++ b/dbt_project.yml
@@ -1,5 +1,5 @@
 name: 'marketo_source'
-version: '0.7.1'
+version: '0.7.2'
 config-version: 2
 require-dbt-version: [">=1.0.0", "<2.0.0"]
 
diff --git a/integration_tests/dbt_project.yml b/integration_tests/dbt_project.yml
index cff5ca9..49730a7 100644
--- a/integration_tests/dbt_project.yml
+++ b/integration_tests/dbt_project.yml
@@ -1,5 +1,5 @@
 name: 'marketo_source_integration_tests'
-version: '0.7.1'
+version: '0.7.2'
 profile: 'integration_tests'
 config-version: 2
 
diff --git a/models/stg_marketo.yml b/models/stg_marketo.yml
index 75f601a..22f9ede 100644
--- a/models/stg_marketo.yml
+++ b/models/stg_marketo.yml
@@ -77,7 +77,7 @@ models:
         description: The URL of the link clicked.
             
       - name: email_send_id
-        description: The inferred ID for the email sent.
+        description: The inferred ID for the email sent. This is created by concatenating primary_attribute_value_id, campaign_id, campaign_run_id, and lead_id. 
             
       - name: email_template_id
         description: The ID of the email's template.
@@ -136,7 +136,7 @@ models:
         description: The email address that bounced.
             
       - name: email_send_id
-        description: The inferred ID for the email sent.
+        description: The inferred ID for the email sent. This is created by concatenating primary_attribute_value_id, campaign_id, campaign_run_id, and lead_id. 
             
       - name: email_template_id
         description: The ID of the email's template.
@@ -177,7 +177,7 @@ models:
         description: The choice number of the current step that triggered the activity.
             
       - name: email_send_id
-        description: The inferred ID for the email sent.
+        description: The inferred ID for the email sent. This is created by concatenating primary_attribute_value_id, campaign_id, campaign_run_id, and lead_id. 
             
       - name: email_template_id
         description: The ID of the email's template.
@@ -221,7 +221,7 @@ models:
         description: The device that was used to open the email.
             
       - name: email_send_id
-        description: The inferred ID for the email sent.
+        description: The inferred ID for the email sent. This is created by concatenating primary_attribute_value_id, campaign_id, campaign_run_id, and lead_id. 
             
       - name: email_template_id
         description: The ID of the email's template.
@@ -271,7 +271,7 @@ models:
         description: The choice number of the current step that triggered the activity.
             
       - name: email_send_id
-        description: The inferred ID for the email sent.
+        description: The inferred ID for the email sent. This is created by concatenating primary_attribute_value_id, campaign_id, campaign_run_id, and lead_id. 
             
       - name: email_template_id
         description: The ID of the email's template.
@@ -312,7 +312,7 @@ models:
         description: The IP address of the client that unsubscribed.
             
       - name: email_send_id
-        description: The inferred ID for the email sent.
+        description: The inferred ID for the email sent. This is created by concatenating primary_attribute_value_id, campaign_id, campaign_run_id, and lead_id. 
             
       - name: email_template_id
         description: The ID of the email's template.
diff --git a/models/stg_marketo__activity_click_email.sql b/models/stg_marketo__activity_click_email.sql
index 73ce839..2fb7b8f 100644
--- a/models/stg_marketo__activity_click_email.sql
+++ b/models/stg_marketo__activity_click_email.sql
@@ -39,7 +39,7 @@ with base as (
 
     select 
         *,
-        {{ dbt_utils.surrogate_key(['campaign_id','campaign_run_id','lead_id']) }} as email_send_id
+        {{ dbt_utils.surrogate_key(['primary_attribute_value_id','campaign_id','campaign_run_id','lead_id']) }} as email_send_id
     from fields
 
 )
diff --git a/models/stg_marketo__activity_email_bounced.sql b/models/stg_marketo__activity_email_bounced.sql
index 2b5369c..4ef4b6d 100644
--- a/models/stg_marketo__activity_email_bounced.sql
+++ b/models/stg_marketo__activity_email_bounced.sql
@@ -38,7 +38,7 @@ with base as (
 
     select 
         *,
-        {{ dbt_utils.surrogate_key(['campaign_id','campaign_run_id','lead_id']) }} as email_send_id
+        {{ dbt_utils.surrogate_key(['primary_attribute_value_id','campaign_id','campaign_run_id','lead_id']) }} as email_send_id
     from fields
 
 )
diff --git a/models/stg_marketo__activity_email_delivered.sql b/models/stg_marketo__activity_email_delivered.sql
index d18956f..2afa8c0 100644
--- a/models/stg_marketo__activity_email_delivered.sql
+++ b/models/stg_marketo__activity_email_delivered.sql
@@ -34,7 +34,7 @@ with base as (
 
     select 
         *,
-        {{ dbt_utils.surrogate_key(['campaign_id','campaign_run_id','lead_id']) }} as email_send_id
+        {{ dbt_utils.surrogate_key(['primary_attribute_value_id','campaign_id','campaign_run_id','lead_id']) }} as email_send_id
     from fields
 
 )
diff --git a/models/stg_marketo__activity_open_email.sql b/models/stg_marketo__activity_open_email.sql
index d0bbe16..e8d2352 100644
--- a/models/stg_marketo__activity_open_email.sql
+++ b/models/stg_marketo__activity_open_email.sql
@@ -38,7 +38,7 @@ with base as (
 
     select 
         *,
-        {{ dbt_utils.surrogate_key(['campaign_id','campaign_run_id','lead_id']) }} as email_send_id
+        {{ dbt_utils.surrogate_key(['primary_attribute_value_id','campaign_id','campaign_run_id','lead_id']) }} as email_send_id
     from fields
 
 )
diff --git a/models/stg_marketo__activity_send_email.sql b/models/stg_marketo__activity_send_email.sql
index 9ce3c2e..d32365e 100644
--- a/models/stg_marketo__activity_send_email.sql
+++ b/models/stg_marketo__activity_send_email.sql
@@ -34,7 +34,7 @@ with base as (
 
     select 
         *,
-        {{ dbt_utils.surrogate_key(['campaign_id','campaign_run_id','lead_id']) }} as email_send_id
+        {{ dbt_utils.surrogate_key(['primary_attribute_value_id','campaign_id','campaign_run_id','lead_id']) }} as email_send_id
     from fields
 
 )
diff --git a/models/stg_marketo__activity_unsubscribe_email.sql b/models/stg_marketo__activity_unsubscribe_email.sql
index 0af8368..e456c0a 100644
--- a/models/stg_marketo__activity_unsubscribe_email.sql
+++ b/models/stg_marketo__activity_unsubscribe_email.sql
@@ -39,7 +39,7 @@ with base as (
 
     select 
         *,
-        {{ dbt_utils.surrogate_key(['campaign_id','campaign_run_id','lead_id']) }} as email_send_id
+        {{ dbt_utils.surrogate_key(['primary_attribute_value_id','campaign_id','campaign_run_id','lead_id']) }} as email_send_id
     from fields
 
 )