```matlab
% Setting gmail credentials
% Please use your own gmail(Google mail) credentials
% And write your messages, specify your file(.png, .jpg, .txt etc.) locations
senderEmail = 'rishikesh0014051992@gmail.com'
senderPassword = 'myPassword@123'
recipientEmails = {'rishikesh0011115067@gmail.com', 'tamzam@gmail.com'}
headerMessage = 'Hello World in MATLAB'
bodyMessage = 'disp() is used to write message on console. Hacker.jpg is attached here.'
attachedFiles = {'H:\RishikeshAgrawani\images\programs\Hacker.jpg'}

% Specify encoding for email
encoding = 'UTF-8'

% Specify SMTP server (It is fixed for Google mail)
emailServer = 'smtp.gmail.com'

% By default, the `sendmail` function does not support email servers that require authentication.
% To support these servers, change your system settings and set preferences for the
% SMTP user name and password, with commands in the following form:
props = java.lang.System.getProperties;
props.setProperty('mail.smtp.auth','true');
props.setProperty('mail.smtp.port', '587');
props.setProperty('mail.smtp.starttls.enable','true');

setpref('Internet','SMTP_Server', emailServer);
setpref('Internet','SMTP_Username', senderEmail);
setpref('Internet','SMTP_Password', senderPassword);
setpref('Internet','E_mail_Charset', encoding);
setpref('Internet','E_mail', senderEmail)

sendmail(recipientEmails, headerMessage, bodyMessage, attachedFiles);
```