diff --git a/main.tf b/main.tf
index 6ec7ceb..24c4eea 100755
--- a/main.tf
+++ b/main.tf
@@ -354,6 +354,7 @@ resource "aws_lambda_function" "email_msg_sender" {
 
   environment {
     variables = {
+      DEBUG_MODE               = var.email_sender_debug_mode
       LOG_LEVEL                = var.service_log_level
       KMS_KEY_ID               = module.kms_key.key_arn
       EMAIL_SENDER_ENABLED     = local.email_sender_enabled
diff --git a/variables.tf b/variables.tf
index ddb1641..2b04d88 100755
--- a/variables.tf
+++ b/variables.tf
@@ -24,12 +24,16 @@ variable "service_log_level" {
 
 # ------------------------------------------------------------- email-sender ---
 
+variable "email_sender_debug_mode" {
+  type    = bool
+  default = false
+}
+
 variable "email_sender_version" {
   type    = string
   default = "latest"
 }
 
-
 variable "email_sender_enabled" {
   description = "Whether or not the Email sender is enabled."
   type        = bool