diff --git a/services/mailer/application/config.js b/services/mailer/application/config.js
index 4c54025fb3..6b33118613 100644
--- a/services/mailer/application/config.js
+++ b/services/mailer/application/config.js
@@ -2,6 +2,7 @@ require('require-yaml');
 const fs = require('fs-extra');
 const packageJson = require('../package.json');
 let configPath = `/etc/${packageJson.name}`;
+let env = process.env.NODE_ENV ? process.env.NODE_ENV : 'development';
 
 let config = require('./config/datasources.json');
 let configFiles = [