diff --git a/src/config.ts b/src/config.ts
index 8919124..4bd6b31 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -11,8 +11,9 @@ export const config = {
     postalcode_validation_countrycode: getPostalCodeLocale(),
     version: process.env.VERSION || require('../package.json').version,
     seedTestData: getDataSeeding(),
+    app_url: process.env.APP_URL || "localhost",
     mail_server: process.env.MAIL_SERVER,
-    mail_port: process.env.MAIL_PORT,
+    mail_port: Number(process.env.MAIL_PORT) || 25,
     mail_user: process.env.MAIL_USER,
     mail_password: process.env.MAIL_PASSWORD,
     mail_from: process.env.MAIL_FROM