diff --git a/validate/common.go b/validate/common.go
index c3ab423..f4abd33 100644
--- a/validate/common.go
+++ b/validate/common.go
@@ -7,6 +7,7 @@ import (
 	"gitea.pena/PenaSide/common/encrypt"
 	"gitea.pena/PenaSide/common/minio_initialize"
 	"gitea.pena/PenaSide/common/mongo"
+	"github.com/gofiber/fiber/v2"
 	"github.com/minio/minio-go/v7"
 	"github.com/pioz/faker"
 	"go.mongodb.org/mongo-driver/bson"
@@ -189,3 +190,20 @@ func ValidateS3(cfg ValidateS3Deps) error {
 
 	return nil
 }
+
+func ValidateSmtp(apiKey string) error {
+	client := fiber.AcquireClient()
+	url := "https://api.smtp.bz/v1/user"
+	agent := client.Get(url)
+	agent.Set("Authorization", apiKey)
+
+	code, _, errs := agent.Bytes()
+	if errs != nil {
+		return errs[0]
+	}
+
+	if code != 200 {
+		return fmt.Errorf("invalid SMTP code: %d", code)
+	}
+	return nil
+}
diff --git a/validate/validate_test.go b/validate/validate_test.go
index db59cf2..f9b2468 100644
--- a/validate/validate_test.go
+++ b/validate/validate_test.go
@@ -18,3 +18,8 @@ func TestValidateTG(t *testing.T) {
 	err := ValidateTgToken("7127966184:AAG1steOCH4wDvHRe9QcsXJPS4dWRyRYsqg")
 	assert.NoError(t, err)
 }
+
+func TestValidateSmtp(t *testing.T) {
+	err := ValidateSmtp("P0YsjUB137upXrr1NiJefHmXVKW1hmBWlpev")
+	assert.NoError(t, err)
+}