Sendmail authentication error with gmail

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Erin
Erin on 8 Jul 2015
Commented: Tom on 1 Jun 2022
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.
  5 Comments
Manikandan Prabakaran
Manikandan Prabakaran on 13 Sep 2018
Mr.Bruno's solution works fine. Thanks a lot sir.

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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.
  4 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.
Tom
Tom on 1 Jun 2022
As of March 2022 Google has disabled this completely :/

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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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