Sunday September 30 - Saturday August 24, 2019


Some workspaces seeing delayed notifications and unfurls

Technical Summary:
On September 30th at 5:28pm PDT, we experienced a partial delay to some background Slack tasks, such as notifications and link unfurls.

At 5:33pm PDT our engineers identified the issue and replaced the faulty server, resuming processing of the background tasks. By 5:50pm PDT, all new notifications were being delivered, and the all clear was called at 5:54pm PDT, August 10th.

If you notice any further issues with background tasks such as notifications, link unfurls or reminders, please reach out to us at

5:28 PM PST

Services affected

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