Friday June 11, 2021


Some users not receiving notifications for threads

Issue summary:
On May 4, 2021 around 11:00 a.m. to 3:27 p.m. PDT on June 11, 2021, a small percentage of users might've not received notifications for threads.

On May 4, 2021, we began rolling out a change to notifications. On June 11, 2021, we started a deeper investigation into reports of users not receiving notifications for threads.

We discovered a potential issue with the change we had started rolling out on May 4, 2021, so we rolled back that change. We saw improvements for some users who weren't receiving notifications for threads. However, the trouble persisted for some users, so we're investigating any outstanding reports separately. If you're encountering any trouble with notifications, please let us know at

Note: We've updated the title to clarify the trouble we were investigating was some users weren't receiving notifications for threads.

11:07 PM PST

We've made a change, and we're seeing improvements with receiving notifications for threads. If you continue to experience trouble, please write us at We'll investigate outside the scope of this issue.

Apologies for the disruption, and thanks again for your patience.

Note: We've updated this message to clarify there were improvements, and we'll investigate outstanding notification trouble outside of the scope of this issue.

4:18 PM PST

Thank you for your patience as we continue to investigate. While we don't have any new information at this time, we'll share an update by 5:00 p.m. PDT, or as soon as new details become available.

3:19 PM PST

Some customers may not be receiving notifications for thread replies. We apologize for the disruption, and we're working to resolve this.

2:34 PM PST

Services affected