feat: expose mock email service function

pkg/email/email_test.go

@@ -1,7 +1,6 @@
 package email
 
 import (
-	"crypto/tls"
 	"fmt"
 	"net/smtp"
 	"os"
@@ -44,19 +43,7 @@ func TestNewConfig_MissingEnvFile(t *testing.T) {
 }
 
 func TestMockSendEmail(t *testing.T) {
-	service := &EmailService{
-		auth: smtp.PlainAuth("", "", "", ""),
-		host: "",
-		port: "",
-		from: "",
-		tlsconfig: &tls.Config{
-			InsecureSkipVerify: true,
-			ServerName:         "",
-		},
-		dial: func(hostPort string) (SMTPClientIface, error) {
-			return &MockSMTP{}, nil
-		},
-	}
+	service := NewMockMailService()
 
 	emailData := EmailMessage{
 		To:      "test@example.com",