Thursday March 27, 2025

From Tuesday, March 25, 2025 at 3:00 AM PDT to April 3, 2025 9:00 AM PDT, some users did not receive emails containing sign-in codes or magic links, or these emails were incorrectly routed to their spam folder.

A third-party email provider made a change to their spam detection models that inadvertently affected these emails. The third-party provider assisted us by updating their spam detection models and all affected Slack emails are now being delivered correctly.

6:46 PM PST

We’ve resolved the issue with login emails and users should now be receiving their confirmation code emails as expected. 

Thank you very much for your patience while we sorted out this issue. 

9:56 AM PST

We've made progress on our investigation and have narrowed down the source of the issue. We're working to get a fix out to affected users. We appreciate you bearing with us as we continue to sort this out.

4:26 PM PST

We continue to investigate this issue, but unfortunately do not have any new information to share at this time.

Thank you for your continued patience as the team works towards a resolution.

9:43 AM PST

We’re still actively investigating this issue, but we don’t have any new information to share at this time.

Thanks for sticking with us as we continue to work towards a fix.

10:47 AM PST

We're continuing to investigate the issue with email delivery. More updates to be shared as they're made available.

Please add the proper Slack domains to any allowed lists and continue to check your spam/junk folders.

12:19 PM PST

Our investigation with this issue is still ongoing, but we don't have any new updates to provide. Once we know more, we'll be back with another update.

We still recommend checking your junk/spam folders for any missed emails and to add the proper Slack domains to your allowed lists.

10:51 AM PST

Some users may find that their confirmation code emails are inadvertently landing in their junk/spam folders, or are otherwise not being delivered to their inboxes as expected. We are investigating and we'll provide another update as soon as we have news to share.

In the meantime, please check your junk/spam folders for these emails, and add @slack.com and @slack-mail.com to your trusted senders/contacts list. We apologize for the disruption to your work.

7:29 PM PST