email validation using email-validator module

lib/server.js

@@ -5,6 +5,7 @@ var async = require('async');
 var log = require('npmlog');
 log.debug = log.verbose;
 log.disableColor();
+var EmailValidator = require('email-validator');
 
 var WalletUtils = require('bitcore-wallet-utils');
 var Bitcore = WalletUtils.Bitcore;
@@ -449,7 +450,7 @@ WalletService.prototype.savePreferences = function(opts, cb) {
   opts = opts || {};
 
   if (opts.email) {
-    if (opts.email.length > 254 || opts.email.indexOf('@') == -1) {
+    if (!EmailValidator.validate(opts.email)) {
       return cb(new ClientError('Invalid email address'));
     }
   }

package.json

@@ -24,6 +24,7 @@
     "bitcore-wallet-utils": "0.0.12",
     "body-parser": "^1.11.0",
     "coveralls": "^2.11.2",
+    "email-validator": "^1.0.1",
     "express": "^4.10.0",
     "inherits": "^2.0.1",
     "locker": "^0.1.0",