Outage in SendGrid
Single Send API endpoint returning 404 "resource not found"
Resolved Minor
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Outage Details
Starting around August 19th at 12PM CST, our engineers began investigating an issue with the single send API endpoint : PATCH /v3/marketing/singlesends/{id} since the server was returning a 404 response. Customers may experience the inability to execute these API calls. This does not impact mail send. We will provide another update in an hour or as soon as more information becomes available.
Components affected
SendGrid Marketing CampaignsLatest Updates ( sorted recent to last )
RESOLVED
1 day ago - at 08/19/2025 06:06PM
Our engineers have monitored the fix and confirmed the issue with single sends and the PATCH endpoint has been resolved. All services are now operating normally at this time.
INVESTIGATING
1 day ago - at 08/19/2025 05:27PM
Starting around August 19th at 12PM CST, our engineers began investigating an issue with the single send API endpoint : PATCH /v3/marketing/singlesends/{id} since the server was returning a 404 response. Customers may experience the inability to execute these API calls. This does not impact mail send. We will provide another update in an hour or as soon as more information becomes available.
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