Mail alert problem

[zippyops1]

Hi, I have a problem in Splunk app for infrastructure. I created an alert in Splunk, once my trigger happen I am getting alert from slack but i am not receive alert from gmail . The configuration is done for both slack and gmail. The error I am getting  ( "530, b'5.7.0 Authentication Required. Learn more at\n5.7.0 https://support.google.com/mail/?p=WantAuthError")

[richgalloway]

The error message explains it well enough.  Add valid credentials to the email config.  The link provided should give details.

[zippyops1]

Even i  added valid credentials to the email config. I am getting the same error.