Outage in SendGrid

406 Errors During Email Sends and SendGrid Website Access

Resolved Minor
August 06, 2025 - Started 3 days ago - Lasted about 1 hour
Official incident page

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Outage Details

Starting around 1:20 PM PST today, our engineering team began investigating an issue affecting access to the SendGrid dashboard and the execution of APIs. As a result, users may encounter 406 errors along with messages indicating that an error has occurred. This issue is currently impacting the ability to send emails. We are actively working to resolve the problem and will provide an update within the next 30 minutes or as soon as additional information becomes available.
Latest Updates ( sorted recent to last )
RESOLVED 3 days ago - at 08/05/2025 10:11PM

Our engineers have confirmed the issue with 406 error has been resolved and email sending was not impacted during this time. All services have been confirmed as operating normally.

MONITORING 3 days ago - at 08/05/2025 09:52PM

Our engineers have reviewed the 406 errors occurring with SendGrid and are currently monitoring the situation. We have confirmed that email sends were not impacted. We will provide another update in 30 minutes or as soon as more information becomes available.

IDENTIFIED 3 days ago - at 08/05/2025 09:36PM

Our engineers have identified the issue and are working toward a fix for the errors being received. We will provide another update in 30 min or as soon as more information becomes available.

INVESTIGATING 3 days ago - at 08/05/2025 09:03PM

Starting around 1:20 PM PST today, our engineering team began investigating an issue affecting access to the SendGrid dashboard and the execution of APIs. As a result, users may encounter 406 errors along with messages indicating that an error has occurred. This issue is currently impacting the ability to send emails.

We are actively working to resolve the problem and will provide an update within the next 30 minutes or as soon as additional information becomes available.

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