SendGrid incident: 5300 Errors on Singapore Client Edge

Affected components

• Client Web AU1
• Client Web IE1
• Client Web US1

1. resolvedOct 17, 2026, 22:11 UTC

   We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. This incident has been resolved.

2. monitoringOct 17, 2026, 21:39 UTC

   We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. Our engineering teams are continuing to monitor to ensure full service recovery. We will provide another update in 2 hours or as soon as more information becomes available.

3. monitoringOct 17, 2026, 20:36 UTC

   We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. Our engineering teams are continuing to monitor to ensure full service recovery. We will provide another update in 1 hour or as soon as more information becomes available.

4. monitoringOct 17, 2026, 20:21 UTC

   We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events. Our engineering teams are continuing to monitor to ensure full service recovery. We will provide another update in 1 hour or as soon as more information becomes available.

5. investigatingOct 17, 2026, 19:23 UTC

   We are no longer observing the issue with 53000 errors on the Singapore edge client causing unregistered events, our engineering teams are still investigating the root cause. We expect to provide another update in 1 hour or as soon as more information becomes available.

6. investigatingOct 17, 2026, 18:21 UTC

   We are currently investigating an issue with 53000 errors on the Singapore edge client causing unregistered events. We expect to provide another update in 1 hour or as soon as more information becomes available

7. investigatingOct 17, 2026, 17:51 UTC

   We are currently investigating an issue with 53000 errors on the Singapore edge client causing unregistered events. We expect to provide another update in 30 minutes or as soon as more information becomes available

8. investigatingOct 17, 2026, 17:07 UTC

   Multiple customers have reported that they are receiving 53000 errors on the Singapore edge client causing unregistered events. Our engineers have been alerted and are investigating. We will provide an update when we have more details.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in SendGrid's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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How often does SendGrid have incidents?

SendGrid reported 459 incidents in the last 90 days, 2 of them major or critical. A typical incident lasted 6h 1m. See SendGrid's uptime and incident history