SMTP Mail through Batch

void SMTPMail()
{
    str _subject;
    str _bodyText;
    SysEmailParameters parameters = SysEmailParameters::find();
    str _emailTo = "example@domain.com";
    str emailFrom = "example@domain.com";
    SysMailer   mailer;
    InteropPermission permission = new InteropPermission(InteropKind::ComInterop);
    ;
    _subject ="Find Attachment";
    _bodyText = "Dear Sir, \n Find the attachment of text file. \n\n With Regards, \n "+curuserid();
    permission.assert();
    permission.objectOnServer();
    mailer = new SysMailer();
    if (_emailTo != "")
        {
        if (parameters.SMTPRelayServerName)
        {
            mailer.SMTPRelayServer(parameters.SMTPRelayServerName,
                               parameters.SMTPPortNumber,
                               parameters.SMTPUserName,
                               SysEmailParameters::password(),
                               parameters.NTLM);
        }
        else
        {
            mailer.SMTPRelayServer(parameters.SMTPServerIPAddress,
                               parameters.SMTPPortNumber,
                               parameters.SMTPUserName,
                               SysEmailParameters::password(),
                               parameters.NTLM);
        }
        mailer.fromAddress(emailFrom);
        mailer.tos().appendAddress(_emailTo);

        mailer.subject(_subject);
        mailer.htmlBody(_bodyText);
        mailer.attachments().add("\\\\192.168.156.36\\temp\\temp.txt");
        mailer.sendMail();
        info("Mail Has been sent");
    }
}
class ITL_Batch_SMTPEmail extends RunBaseBatch
{
    TransDate            fromdate,todate;

    #define.CurrentVersion(1)
    #define.Version1(1)
    #localmacro.CurrentList
         fromdate,
         todate
    #endmacro
}
public void run()
{
    super();
    this.SMTPMail();
}
public boolean canGoBatch()
{
    return true;
}




protected boolean canGoBatchJournal()
{
    return true;
}
Object dialog()
{
    DialogRunbase  dialog  = super();
    ;
    return dialog;
}
public boolean  getFromDialog()
{
    ;
     return true;
}
public container pack()
{
    return [#CurrentVersion,#CurrentList];
}




public boolean unpack(container packedClass)
{
    Version version = RunBase::getVersion(packedClass);
    ;
    switch (version)
    {
        case #CurrentVersion:
            [version,#CurrentList] = packedClass;
            break;
        default:
            return false;
    }
    return true;
}
static void main(Args args)
{
    ITL_Batch_SMTPEmail  ITL_Batch_SMTPEmail;
    ;
    ITL_Batch_SMTPEmail = new ITL_Batch_SMTPEmail();
    if(ITL_Batch_SMTPEmail.prompt())
    {
         ITL_Batch_SMTPEmail.run();
    }
}