update config

config.js

@@ -40,14 +40,12 @@ var config = {
     },
   },
   // To use email notifications uncomment this:
-  // email: {
-  //   auth: {
-  //     host: 'localhost',
-  //     port: 25,
-  //     ignoreTLS: true,
-  //   },
-  //   subjectPrefix: '[Wallet Service]',
-  //   from: 'wallet-service@bitcore.io',
-  // },
+  email: {
+    host: 'localhost',
+    port: 25,
+    ignoreTLS: true,
+    subjectPrefix: '[Wallet Service]',
+    from: 'wallet-service@bitcore.io',
+  },
 };
 module.exports = config;

lib/server.js

@@ -357,9 +357,11 @@ WalletService.prototype._notify = function(type, data, opts, cb) {
 
   this.storage.storeNotification(walletId, notification, function() {
     self.messageBroker.send(notification);
-    self.emailService.sendEmail(notification, function() {
-      if (cb) return cb();
-    });
+    if (self.emailService) {
+      self.emailService.sendEmail(notification, function() {
+        if (cb) return cb();
+      });
+    }
   });
 };