Use of sendmail function to send an email from a gmail account

I am trying to send an email, using the MATLAB sendmail function. I have been following the instructions of the sendmail function analysis in Mathworks on this link: https://uk.mathworks.com/help/matlab/import_export/sending-email.html

The code which I used on the command window is the following:

setpref ('Internet','E_mail','[e-mail]');
setpref ('Internet','SMTP_Server','smtp.gmail.com') ;
setpref('Internet',SMTP_Username','myusername'); 
setpref('Internet','SMTP_Password','mypassword') ;
sendmail('[e-mail]','texttobesent') ;

The message that I am getting after running those commands is the following:

Error using sendmail (line 169) 530 5.7.0 Must issue a STARTTLS command first. i67sm1310611wri.61 - gsmtp

From what I understand, I must change the arguments inside one of the setpref functions that I call, though I am not sure what exactly to include in them. Any help would be very much appreciated! Thank you in advance!

Answer 1

[JESUS DAVID ARIZA ROYETH]

solution:

setpref('Internet','SMTP_Server','smtp.gmail.com');
setpref('Internet','E_mail','[e-mail]');
setpref('Internet','SMTP_Username','myusername');
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('[e-mail]','texttobesent') ;

[ZACHARIAS KOUNTOUPIS]

Hi, and thanks for your answer. I run this code, with putting my info where need be, and the result that I get from MATLAB is the following:

Error using sendmail (line 169)

Authentication failed.

Not sure why this is returned.

Edit: I just needed to turn on access for less secure apps through google, and it worked.

[Jitendra Kumar]

I am getting following error even after turning on access for less secure apps

Error using sendmail (line 175) Could not connect to SMTP host: smtp.gmail.com, port: 25; Connection timed out: connect

[Lalitha Srilal Kannangara Arachchige]

Did you find any method to solve this? I also receive the same error after fixing the security level of Gmail

[Kouichi C. Nakamura]

Me too. The password should be right, but I got this:

Error using sendmail (line 175) Authentication failed.

[Walter Roberson]

Make sure you visit https://myaccount.google.com/security#signin and in the section "Apps with account access" change "Allow less secure apps" to ON

[Wonsup Lee]

If you use 2-Step Verification, refer to this site: https://support.google.com/accounts/answer/185833 . You need to get an 'app-specific password' that should be used instead of your real Gmail password.

[John B.]

I found this helped in one case: After trying from one instance of Matlab, I had to go into my Google account and acknowledge that the recent login activity was actually me. The next try with Matlab then worked.

[Bagadam David]

excellent its working Mr walter & Royeth

i was getting error as "authentication failed"

then i looked out for your tip on turning on the app security in google settings

Thank you

[Irene arnaldo]

I am still having problems with authentication failed!!

A) I have disabled 2 step verification, turned on 'less secure apps' and introduce used my normal password on matlab code: didnt work.

B) I also tried getting the app password but matlab doesn´t recognize it (Do you need to verify it somehow thrugh matlab???).

[Mutual Information]

Thanks for this solution. I've been trying to do this for a while.

[Adam Danz]

For those of you still having trouble after granting access in google security settings, there's a discussion under this answer pointing to solutions to problems with antivirus software, firewalls, and security certificate issues.

Answer 2

[P M]

Am having MATLAB 2012a.. it is asking for activation whenever opening MATLAB. After activation process completed also, repeatedly asking to activate. How to solve this pbm. Pls help me...