I cannot get JIRA mail working with Gmail or Yahoo mail

Question

I selected Google App Mail/Gmail, and provided my Gmail user name and password, but it would not work. I pressed "Test Connection", it always returns with the following error message:

Unfortunately no connection was possible. Review the errors below and rectify:

* AuthenticationFailedException: 535-5.7.8 Username and Password not accepted. Learn more at 535 5.7.8 https://support.google.com/mail/?p=BadCredentials x10sm15971745qkl.47 - gsmtp

I also tried Yahoo Mail Plus, but not working either. Both Yahoo mail and Gmail works fine on my computer and I used them both regularly.

Anyone can help? Thanks in advance!

------------------------------

Here is an error log when I tried "send Test email":

--------------------------------

An error has occurred with sending the test email:
com.atlassian.mail.MailException: javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted. Learn more at
535 5.7.8  https://support.google.com/mail/?p=BadCredentials j128sm16269379qkf.52 - gsmtp

at com.atlassian.mail.server.impl.SMTPMailServerImpl.sendWithMessageId(SMTPMailServerImpl.java:225)
 at com.atlassian.mail.server.impl.SMTPMailServerImpl.send(SMTPMailServerImpl.java:162)
 at com.atlassian.jira.plugins.mail.webwork.SendTestMail.doExecute(SendTestMail.java:107)
 at webwork.action.ActionSupport.execute(ActionSupport.java:165)
 at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:63)
 at webwork.interceptor.DefaultInterceptorChain.proceed

.....

Baris Sehitoglu · Answer

The Solution is to go to Gmail's account setting and Turn off less secure apps

* Go to the section of your Google Account. You might need to sign in.
* Turn Allow less secure apps on

Murugan Mittapalli · Answer

@Harry Zhang, Did you get the solution for this, I am also facing the same issue, Please let me know if you fixed this issue.

Thank you.

Andy Heinzer · Answer

With gmail, I'd recommend using your full email address as your username.  Such as user@example.com If you're using a google apps domain, this is required, but I still find it's best practice to do so even with those gmail.com domains.

Also did you walk through the Google Troubleshooting help as mentioned in that error link? https://support.google.com/mail/?p=BadCredentials

That link has some good next steps to follow as well.  If your Google account is currently setup to use 2 step verification, then you will likely want to create an App Password in order to let an application like Jira or Confluence to use this account.