http://www.newsweek.com/slack-down-messaging-app-suffers-outages-sending-panic-throughout-working-1205065

The Slack messaging application is seen on a phone screen August 3, 2017. On Friday, users complained of connectivity issues with the application. Thomas White/Reuters Share Tech & ScienceWorkplace chat application Slack appeared to be suffering some downtime today, with numerous social media users claiming that messages were not being sent.

The app's official status page said, “Smooth sailing! Nothing to report here. Slack is up and running normally.” But Twitter comments indicated that was not accurate.