Gmail authentication issue

Trying to use gmail smtp I get this error message:

A problem occurred while sending the email. Please revise your settings. (Error: Failed to authenticate on SMTP server with username "" using 1 possible authenticators)

I then get an email from gmail saying - “Google just blocked someone from signing into your Google account from an app that may put your account at risk.”

I can allow a less secure app but would prefer not to –

If you can not access your Gmail account use to unlock your account.

Unfortunately, I see no other way :confused:

If you still need help:

Go to, generate a password and use that one in the authentication config with mode ‘ssl’ and port ‘465’