Resolved on February 16, 2026.
We experienced a period of delayed sends (including proofs) as well as errors in user updates from 7am to 9am ET. The issue has been resolved. Some delayed messages may still be processing and will be sent shortly. If customers received 500 responses to API requests, they should re-try those calls.
Update timeline
- resolved Feb 16, 2026, 12:00 PM UTC
We experienced a period of delayed sends (including proofs) as well as errors in user updates from 7am to 9am ET. The issue has been resolved. Some delayed messages may still be processing and will be sent shortly. If customers received 500 responses to API requests, they should re-try those calls.
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Amazon Web Services