The Sitemason Status page is available at status.sitemason.com to monitor Sitemason uptime and performance. It is located in a separate hosting facility from the main Sitemason services, and should be available whether Sitemason is encountering issues or not.
Please check this page first if you are having issues reaching your website. If all services are "green" and operating normally, please read the article "I (or Someone Else) Can't Access My Website!" for more tips on troubleshooting.