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Sendmail authentication error with gmail

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Erin
Erin on 8 Jul 2015
Commented: Shae Morgan on 8 Oct 2020
Here is my code:
myaddress = 'example@gmail.com';
mypassword = 'example';
setpref('Internet','E_mail',myaddress);
setpref('Internet','SMTP_Server','smtp.gmail.com');
setpref('Internet','SMTP_Username',myaddress);
setpref('Internet','SMTP_Password',mypassword);
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');
sendmail(toexample@cornell.edu,'email subject test',...
'this email is a test','D:\testimagetosend.tif')
And here is the error message: Error using sendmail (line 171) Authentication failed.
From everything else I have read, the preferences and properties required for gmail are all taken care of, but still getting the error.
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Answers (2)

Walter Roberson
Walter Roberson on 8 Aug 2015
Within the last 8 months, Google turned off default support for an older less-secure authentication. You can re-enable it on your account... for now.
  3 Comments
Shae Morgan
Shae Morgan on 8 Oct 2020
I'd like to add that if your use seems suspicious to google, it'll still fail the authentication attempt as suspicious activity.
Not sure how to work around this.

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Pankaj
Pankaj on 14 Apr 2016
Edited: Pankaj on 14 Apr 2016
For some service providers the extension ' @gmail.com' in myaddress may cause authentication error. Simply use userID.

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