We publish service updates and availability notices on our status page.
Go to https://status.saucelabs.com/ and select your preferred data center. If there is a service disruption with tests, tunnels, devices, or anything else to do with Sauce Labs this is the place to find it.
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You can subscribe to Email, Text, or Twitter Alerts from our status page as well. If you'd like to know when an issue is resolved (or when one starts) please subscribe there. If you email help@saucelabs.com we'll also point you to this page so you can monitor the impact.