sending emails through Matlab

I have tried with following code.

    mail = '[e-mail]'; 
    password = 'my_password';
    setpref('Internet','SMTP_Server','smtp.gmail.com');
    setpref('Internet','E_mail',mail);
    setpref('Internet','SMTP_Username',mail);
    setpref('Internet','SMTP_Password',password);
    props = java.lang.System.getProperties;
    props.setProperty('mail.smtp.auth','true');
    props.setProperty('mail.smtp.starttls.enable','true');
    %props.setProperty('mail.smtp.socketFactory.class', 'javax.net.ssl.SSLSocketFactory');
    %props.setProperty('mail.smtp.socketFactory.port','25');
    sendmail(sent_email,'Test from MATLAB','Hello! This is a test from MATLAB!')

But it gives the following error after allowing access to the low-security application through Gmail account.

"Error using sendmail (line 175)
Could not connect to SMTP host: smtp.gmail.com, port: 25, response: 421"

can anyone help me to solve this issue?

Answer 1

[Kojiro Saito]

As this page says, smtp.gmail.com uses port 465 (SSL) or 587 (TLS), so you need to specify port number.

props.setProperty('mail.smtp.socketFactory.port','465');

Also, by default, Gmail blocks less secure apps, so you need to enable it following the steps in this page. If you have Google accounts on your own, a simple way is enabling less secure apps from https://myaccount.google.com/lesssecureapps.

[Omar Salah]

This worked for me. Thank you.