Our email service provider is having an outage and as a result, Looker is currently unable to send any email deliveries. We’re working with them to resolve this as quickly as possible.
This only affects those using our default SMTP settings. If you are using a custom SMTP configuration, you should not experience any interruption.
We’re sorry for the inconvenience. I’ll update this thread with more information when we have it.
09:26am PDT, June 1 2020