The issue was resolved. Now you can send mail messages. We're investigating what can be done so we can resolve this kinds of issues in the future.
Posted May 31, 2018 - 16:46 UTC
Identified
Mail that is not sent via Gmail is currently not being delivered. We've identified the issue and we're working with our provider to resolve this as soon as possible.
Posted May 31, 2018 - 16:00 UTC
This incident affected: Helpdesk Integrations (Email).