Tuesday February 19 - Sunday December 15, 2019


Trouble with sending messages

Issue Summary:

On February 19th at 3:00PM PT, we deployed a change to one of our core systems. At 3:03PM PT we received internal warnings that this change had caused elevated error rates in message sending and began investigating. By 4:39PM PT we had resolved the issue and all messages were sending as expected.

11:38 PM PST

The team have been monitoring things and have given us the all-clear. If you are still experiencing issues with message delivery please let us know at feedback@slack.com. So sorry for all this hassle.

4:59 PM PST

We're investigating why some people are having issues sending messages. Apologies for this disruption.

4:29 PM PST

Services affected