diff --git a/main.go b/main.go
index 3cbef61..fbf90bd 100644
--- a/main.go
+++ b/main.go
@@ -11,6 +11,22 @@ import (
 	"github.com/joho/godotenv"
 )
 
+func corsMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Access-Control-Allow-Origin", "*") // Ganti * dengan origin spesifik jika perlu
+		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
+
+		// Untuk preflight request
+		if r.Method == "OPTIONS" {
+			w.WriteHeader(http.StatusOK)
+			return
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}
+
 func main() {
 	log.Println("Email Notification Service")
 	err := godotenv.Load()
@@ -20,9 +36,13 @@ func main() {
 
 	db := config.NewDatabase().WithContext(context.Background())
 
-	route.Route(db)
+	mux := http.NewServeMux()
+
+	handlerWithCORS := corsMiddleware(mux)
+
+	route.Route(db, mux)
 
 	port := os.Getenv("PORT")
 
-	http.ListenAndServe(":"+port, nil)
+	http.ListenAndServe(":"+port, handlerWithCORS)
 }
diff --git a/route/route.go b/route/route.go
index 791ce64..6bc5c0e 100644
--- a/route/route.go
+++ b/route/route.go
@@ -15,8 +15,8 @@ import (
 	"gorm.io/gorm"
 )
 
-func Route(db *gorm.DB) {
-	http.HandleFunc("/birthday-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
+func Route(db *gorm.DB, mux *http.ServeMux) {
+	mux.HandleFunc("/birthday-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return
@@ -68,7 +68,7 @@ func Route(db *gorm.DB) {
 		w.Write([]byte("success"))
 	}))
 
-	http.HandleFunc("/workanniversary-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
+	mux.HandleFunc("/workanniversary-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return
@@ -125,7 +125,7 @@ func Route(db *gorm.DB) {
 		w.Write([]byte("success"))
 	}))
 
-	http.HandleFunc("/server-down-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
+	mux.HandleFunc("/server-down-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return
@@ -162,7 +162,7 @@ func Route(db *gorm.DB) {
 		w.Write([]byte("success"))
 	}))
 
-	http.HandleFunc("/high-memory-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
+	mux.HandleFunc("/high-memory-notification", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return
@@ -199,7 +199,7 @@ func Route(db *gorm.DB) {
 		w.Write([]byte("success"))
 	}))
 
-	http.HandleFunc("/send-email", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
+	mux.HandleFunc("/send-email", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodPost {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return
@@ -257,7 +257,7 @@ func Route(db *gorm.DB) {
 		w.Write([]byte("success"))
 	}))
 
-	http.Handle("/", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
+	mux.Handle("/", middleware.ResponseTimeMiddleware(func(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodGet {
 			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
 			return