diff --git a/.env.example b/.env.example
index 1c38371..51fa1d6 100644
--- a/.env.example
+++ b/.env.example
@@ -89,4 +89,6 @@ EMAIL_AUTO_CLASSIFY=false
 EMAIL_AI_CONFIDENCE_THRESHOLD=0.7
 EMAIL_MAX_FETCH_PER_RUN=50
 EMAIL_PROCESS_INTERVAL_MINUTES=5
-EMAIL_WORKFLOWS_ENABLED=true
\ No newline at end of file
+EMAIL_WORKFLOWS_ENABLED=true
+EMAIL_MAX_UPLOAD_SIZE_MB=50
+ALLOWED_EXTENSIONS=.pdf,.jpg,.jpeg,.png,.gif,.doc,.docx,.xls,.xlsx,.zip
\ No newline at end of file
diff --git a/app/core/config.py b/app/core/config.py
index dff8cbc..2f20094 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -70,6 +70,7 @@ class Settings(BaseSettings):
     EMAIL_PROCESS_INTERVAL_MINUTES: int = 5
     EMAIL_WORKFLOWS_ENABLED: bool = True
     EMAIL_MAX_UPLOAD_SIZE_MB: int = 50  # Max file size for email uploads
+    ALLOWED_EXTENSIONS: List[str] = [".pdf", ".jpg", ".jpeg", ".png", ".gif", ".doc", ".docx", ".xls", ".xlsx", ".zip"]  # Allowed file extensions for uploads
     
     # vTiger Cloud Integration
     VTIGER_ENABLED: bool = False