On August 25, 2021 from around 3:46 p.m. to 8:00 p.m. PDT, some customers may not have received emails from Slack.
A planned change inadvertently caused issues with email delivery. This prevented some customers from receiving emails necessary for logging in to Slack or for creating new Slack accounts after being sent an invitation to a workspace.
We reverted the change, resolving the issue for all affected customers.
Note: We've updated the times above to more accurately reflect the duration of the issue.
11:55 PM PST
We've resolved the issues with email delivery and account creation. Emails should be delivered in a timely manner once again, and everyone should be able to sign in to or sign up for Slack as normal.
Thank you for bearing with us. We'll be back with an issue summary soon.
8:15 PM PST
We're still looking into the cause of the email delivery and account creation issues. We're focused on getting things back to normal as quickly as we can, and we’ll provide another update in 30 minutes.
Note: We've updated the title and the posts below to reflect our expanded understanding of the problem.
8:03 PM PST
We're still digging into this, but we don't have any additional information to share just yet. We'll be back in 30 minutes with another update.
7:34 PM PST
Some customers may not be receiving emails from Slack. This may result in issues logging in to Slack or creating new Slack accounts after receiving an invitation to a workspace. We're working to resolve this as fast as we can, and we're very sorry for the disruption.
Thank you for your patience and understanding as we investigate.
7:03 PM PST