function send_mail_message(id,subject,message,attachment)
%% SEND_MAIL_MESSAGE send email to gmail once calculation is done
% Example
% send_mail_message('its.neeraj','Simulation finished','This is the message area','results.doc')
 
% Pradyumna
% June 2008
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%Your gmail ID and password 
%(from which email ID you would like to send the mail)
mail = 'GMailId@gmail.com';    %Your GMail email address
password = 'GmailPassword';          %Your GMail password
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

if nargin == 1
    message = subject;
    subject = '';
elseif nargin == 2
    message = '';
    attachment = '';
elseif nargin == 3
    attachment = '';
end

% Send Mail ID
emailto = strcat(id,'@gmail.com');
%% Set up Gmail SMTP service.
% Then this code will set up the preferences properly:
setpref('Internet','E_mail',mail);
setpref('Internet','SMTP_Server','smtp.gmail.com');
setpref('Internet','SMTP_Username',mail);
setpref('Internet','SMTP_Password',password);

% Gmail server.
props = java.lang.System.getProperties;
props.setProperty('mail.smtp.auth','true');
props.setProperty('mail.smtp.socketFactory.class', 'javax.net.ssl.SSLSocketFactory');
props.setProperty('mail.smtp.socketFactory.port','465');

%% Send the email
if strcmp(mail,'GmailId@gmail.com')
    disp('Please provide your own gmail.')
    disp('You can do that by modifying the first two lines of the code')
    disp('after the comments.')
end

sendmail(emailto,subject,message,attachment)

end
