Email (Gmail)

gistfile1.txt

To: "alejonext@gmail.com" <alejonext@gmail.com>
Subject: prueba
X-PHP-Originating-Script: 0:class.phpmailer.php
Date: Tue, 30 Dec 2014 19:43:59 -0500
From: Alejandro Next <alejonext@protonmail.ch>
Reply-To: Alejandro Next <alejonext@protonmail.ch>
Message-ID: <abeca990c24330d04161d56893e9d23a@protonmail.ch>
X-Priority: 3
MIME-Version: 1.0
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: base64

UHJ1ZWJhPGJyPjxicj48YnI+U2VudCBmcm9tIDxhIGhyZWY9Imh0dHBzOi8vcHJvdG9ubWFpbC5j
aCIgcmVsPSJub2ZvbGxvdyIgdGFyZ2V0PSJfYmxhbmsiPlByb3Rvbk1haWw8L2E+LCBlbmNyeXB0
ZWQgZW1haWwgYmFzZWQgaW4gU3dpdHplcmxhbmQuPGJyPjxicj48YnI+

test.js

var str = ['UHJ1ZWJhPGJyPjxicj48YnI+U2VudCBmcm9tIDxhIGhyZWY9Imh0dHBzOi8vcHJvdG9ubWFpbC5j', 
'aCIgcmVsPSJub2ZvbGxvdyIgdGFyZ2V0PSJfYmxhbmsiPlByb3Rvbk1haWw8L2E+LCBlbmNyeXB0', 
'ZWQgZW1haWwgYmFzZWQgaW4gU3dpdHplcmxhbmQuPGJyPjxicj48YnI+' ];

str = str.join('\n');

console.log(' str: ', str);

var buf =  new Buffer( str, 'base64' );

console.log(' str: ', buf.toString());