com.sun.mail.smtp.SMTPSendFailedException: 530 Authentication required in Jenkins

Question

I've turned on less secured apps on google. Checked use SMTP Authentication in Jenkins.

Tried using AWS Simple email service too. But still, Authentication required error is showing up

Error logs using Google SMTP

ERROR: 530-5.5.1 Authentication Required. Learn more at
530 5.5.1  https://support.google.com/mail/?p=WantAuthError x9sm20383081pje.27 - gsmtp

com.sun.mail.smtp.SMTPSendFailedException: 530-5.5.1 Authentication Required. Learn more at
530 5.5.1  https://support.google.com/mail/?p=WantAuthError x9sm20383081pje.27 - gsmtp

    at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2057)
    at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1580)
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1097)
    at javax.mail.Transport.send0(Transport.java:195)
    at javax.mail.Transport.send(Transport.java:124)
    at hudson.tasks.MailSender.run(MailSender.java:130)
    at hudson.tasks.Mailer.perform(Mailer.java:175)
    at hudson.tasks.Mailer.perform(Mailer.java:138)
    at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741)
    at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
    at hudson.model.Build$BuildExecution.post2(Build.java:186)
    at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
    at hudson.model.Run.execute(Run.java:1840)
    at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
    at hudson.model.ResourceController.execute(ResourceController.java:97)
    at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE

Error logs using using AWS Simple Email Service

ERROR: 530 Authentication required

com.sun.mail.smtp.SMTPSendFailedException: 530 Authentication required

    at com.sun.mail.smtp.SMTPTransport.issueSendCommand(SMTPTransport.java:2057)
    at com.sun.mail.smtp.SMTPTransport.mailFrom(SMTPTransport.java:1580)
    at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1097)
    at javax.mail.Transport.send0(Transport.java:195)
    at javax.mail.Transport.send(Transport.java:124)
    at hudson.tasks.MailSender.run(MailSender.java:130)
    at hudson.tasks.Mailer.perform(Mailer.java:175)
    at hudson.tasks.Mailer.perform(Mailer.java:138)
    at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
    at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:741)
    at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:690)
    at hudson.model.Build$BuildExecution.post2(Build.java:186)
    at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:635)
    at hudson.model.Run.execute(Run.java:1840)
    at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
    at hudson.model.ResourceController.execute(ResourceController.java:97)
    at hudson.model.Executor.run(Executor.java:429)
Finished: FAILURE