Hi everyone,
I have set the SMTP Mail Setup like image below (both 587 and 465 still not work).

After that I click on "Test Email Setup" then an error occurs like this.

I have turned on Less Secure App in my gmail account but still cannot working.
There is anything that I miss?
Thanks,
Answers
https://community.dynamics.com/business/f/dynamics-365-business-central-forum/293878/g-suite-gmail-smtp-server-authentication