diff --git a/go.mod b/go.mod
index b65b9f2..fe5c569 100644
--- a/go.mod
+++ b/go.mod
@@ -3,15 +3,15 @@ module smpp-transmitter
 go 1.23rc1
 
 require (
-	github.com/joho/godotenv v1.5.1
 	github.com/streadway/amqp v1.1.0
 	gorm.io/driver/mysql v1.5.7
-	gorm.io/gorm v1.25.11
 )
 
 require (
 	github.com/go-sql-driver/mysql v1.7.0 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/jinzhu/now v1.1.5 // indirect
+	github.com/joho/godotenv v1.5.1
 	golang.org/x/text v0.14.0 // indirect
+	gorm.io/gorm v1.25.11 // indirect
 )
diff --git a/pkg/data/message.go b/pkg/data/message.go
index 0d316f4..95a40da 100644
--- a/pkg/data/message.go
+++ b/pkg/data/message.go
@@ -3,14 +3,17 @@ package data
 import (
 	"context"
 	"encoding/json"
+	"time"
 
 	"gorm.io/gorm"
 )
 
 type Message struct {
+	ID  uint   `gorm:"primarykey"`
 	Src string `json:"src"`
 	Dst string `json:"dst"`
 	Msg string `json:"msg"`
+	Ts  int    `json:"ts"`
 }
 
 func (m *Message) Convert(msgBody []byte) error {
@@ -21,8 +24,13 @@ func (m *Message) Convert(msgBody []byte) error {
 }
 
 func (m *Message) Insert(ctx context.Context, db *gorm.DB) error {
+	m.Ts = int(time.Now().Unix())
 	if err := db.WithContext(ctx).Create(&m).Error; err != nil {
 		return err
 	}
 	return nil
 }
+
+func (m *Message) TableName() string {
+	return "outbox"
+}