diff --git a/app/config.py b/app/config.py
index 1633fe18a..9df753e9b 100644
--- a/app/config.py
+++ b/app/config.py
@@ -355,6 +355,7 @@ class Development(Config):
     LETTERS_PDF_BUCKET_NAME = 'development-letters-pdf'
     LETTERS_SCAN_BUCKET_NAME = 'development-letters-scan'
     INVALID_PDF_BUCKET_NAME = 'development-letters-invalid-pdf'
+    TRANSIENT_UPLOADED_LETTERS = 'development-transient-uploaded-letters'
 
     ADMIN_CLIENT_SECRET = 'dev-notify-secret-key'
     SECRET_KEY = 'dev-notify-secret-key'
@@ -394,6 +395,7 @@ class Test(Development):
     LETTERS_PDF_BUCKET_NAME = 'test-letters-pdf'
     LETTERS_SCAN_BUCKET_NAME = 'test-letters-scan'
     INVALID_PDF_BUCKET_NAME = 'test-letters-invalid-pdf'
+    TRANSIENT_UPLOADED_LETTERS = 'test-transient-uploaded-letters'
 
     # this is overriden in jenkins and on cloudfoundry
     SQLALCHEMY_DATABASE_URI = os.getenv('SQLALCHEMY_DATABASE_URI', 'postgresql://localhost/test_notification_api')
@@ -427,6 +429,7 @@ class Preview(Config):
     LETTERS_PDF_BUCKET_NAME = 'preview-letters-pdf'
     LETTERS_SCAN_BUCKET_NAME = 'preview-letters-scan'
     INVALID_PDF_BUCKET_NAME = 'preview-letters-invalid-pdf'
+    TRANSIENT_UPLOADED_LETTERS = 'preview-transient-uploaded-letters'
     FROM_NUMBER = 'preview'
     API_RATE_LIMIT_ENABLED = True
     CHECK_PROXY_HEADER = False
@@ -441,6 +444,7 @@ class Staging(Config):
     LETTERS_PDF_BUCKET_NAME = 'staging-letters-pdf'
     LETTERS_SCAN_BUCKET_NAME = 'staging-letters-scan'
     INVALID_PDF_BUCKET_NAME = 'staging-letters-invalid-pdf'
+    TRANSIENT_UPLOADED_LETTERS = 'staging-transient-uploaded-letters'
     FROM_NUMBER = 'stage'
     API_RATE_LIMIT_ENABLED = True
     CHECK_PROXY_HEADER = True
@@ -456,6 +460,7 @@ class Live(Config):
     LETTERS_PDF_BUCKET_NAME = 'production-letters-pdf'
     LETTERS_SCAN_BUCKET_NAME = 'production-letters-scan'
     INVALID_PDF_BUCKET_NAME = 'production-letters-invalid-pdf'
+    TRANSIENT_UPLOADED_LETTERS = 'production-transient-uploaded-letters'
     FROM_NUMBER = 'GOVUK'
     PERFORMANCE_PLATFORM_ENABLED = True
     API_RATE_LIMIT_ENABLED = True