Outage in SendGrid
Elevated Email deferrals
Resolved MinorIncident Report
Summary AI Generated
SendGrid experienced elevated email deferrals for 3.8 hours starting at 9:25 AM GMT+8 on June 10, 2026, where some messages received "Internal Server Error" responses and experienced delivery delays. While users could still send emails, a subset of messages were temporarily deferred during processing. Engineers implemented a fix and confirmed all services returned to normal operation.
Starting around 9:25 AM GMT+8 on June 10, 2026, our engineers began investigating an issue affecting email processing within SendGrid. Users may have experienced elevated email deferrals, with some messages temporarily receiving "Internal Server Error" responses during delivery attempts. This issue does not impact mail send capability; however, delivery may have been delayed for a subset of messages. Our team continues to investigate the root cause and monitor system performance. We will provide another update in 60 minutes or as soon as more information becomes available.
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Latest Updates ( sorted recent to last )
RESOLVED
3 days ago - at 06/10/2026 08:49AM
Our engineers have monitored the fix and confirmed the issue with email deferrals has been resolved. All services are now operating normally at this time.
MONITORING
3 days ago - at 06/10/2026 05:51AM
Our engineers have implemented a fix and are monitoring system performance. We will provide another update in an hour or as soon as more information becomes available.
INVESTIGATING
3 days ago - at 06/10/2026 05:07AM
Starting around 9:25 AM GMT+8 on June 10, 2026, our engineers began investigating an issue affecting email processing within SendGrid. Users may have experienced elevated email deferrals, with some messages temporarily receiving "Internal Server Error" responses during delivery attempts. This issue does not impact mail send capability; however, delivery may have been delayed for a subset of messages. Our team continues to investigate the root cause and monitor system performance. We will provide another update in 60 minutes or as soon as more information becomes available.
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