Outage in Nylas

US – Service Degradation: Elevated Webhook Latencies Primarily Affecting Microsoft Accounts

Resolved Minor
September 09, 2025 - Started 8 days ago - Lasted about 3 hours
Official incident page

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Outage Details

We are investigating elevated sync and webhook latencies in our US data center, primarily impacting Microsoft-connected accounts, with some impact also observed on Google accounts. Our engineering team is analyzing the issue and working to identify the root cause. We will share further updates as more information becomes available. Thank you for your patience.
Latest Updates ( sorted recent to last )
RESOLVED 8 days ago - at 09/09/2025 10:48PM

Sync and webhook latencies in our US data center remain at normal levels, and the backlog of pending webhook deliveries has been fully cleared.

Our engineering team will continue to monitor for stability, but no further impact is expected.

Thank you for your patience throughout this incident.

MONITORING 8 days ago - at 09/09/2025 09:08PM

Sync and webhook latencies in our US data center have returned to normal levels. The backlog of pending webhook deliveries is expected to clear over the next few hours, and we will post an update once this process is complete.

Our engineering team will continue to monitor closely to ensure stability, but no further impact is expected at this time.

Thank you for your patience while we worked to resolve this issue.

MONITORING 8 days ago - at 09/09/2025 08:30PM

Sync and webhook latencies are improving. We are continuing to investigate the root cause and are working to ensure performance remains stable.

INVESTIGATING 8 days ago - at 09/09/2025 07:55PM

We are investigating elevated sync and webhook latencies in our US data center, primarily impacting Microsoft-connected accounts, with some impact also observed on Google accounts.

Our engineering team is analyzing the issue and working to identify the root cause. We will share further updates as more information becomes available.

Thank you for your patience.

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