Javascript to Send a E-Mail using Scripting

JavaScript to send a mail using scripting 

var from = "sender mail address";

var to = "recipient mail address ";

var subject = 'Congrats!!! You created a mail';//Enter Subject to mail

var body = 'Hi <b>'+recipient+'</b>,';
body += '<br><br>You have successfully created mail';

//Sending mail
nlapiSendEmail(from, to, subject, body);

If you want to send any attachments with mail:

//Sending mail with attachments

var attach = nlapiPrintRecord('TRANSACTION', recid);

nlapiSendEmail(from, to, subject, body,null,null,null,attach);