SendGrid outage, November 2026: RateQueue Host Down Did Not Recover

SendGrid reported and resolved an incident: RateQueue Host Down Did Not Recover. It lasted 39.9 hours.

Resolved

From SendGrid's official status page, in their words.

What happened

Started
Resolved
Duration
39.9 hours
Impact
minor
Affected
SMS
  1. Investigating
  2. Identified
  3. Monitoring
  4. Resolved

Why it happened

SendGrid has not given a cause in its updates. We never guess one.

How it was resolved

We are no longer experiencing the issue causing delays in messages. This incident has been resolved.

SendGrid's closing update

This incident on the SendGrid status page

Timeline

Oldest first, from the first notice to the resolution. From SendGrid's official status page, in their words.

  1. investigating

    We are investigating delays in messages presented, while no messages are lost. We expect to provide another update in 1 hour or as soon as more information becomes available

  2. identified

    Our engineering team has identified and mitigated the issue causing delays in messages which were presented, while no messages were lost we continue to investigate the root cause. We expect to provide another update in 1 hour or as soon as more information becomes available

  3. identified

    Our engineering team has identified and mitigated the issue causing delays in messages which were presented, while no messages were lost we continue to investigate the root cause. We expect to provide another update in 2 hour or as soon as more information becomes available

  4. identified

    Our engineering team has identified and mitigated the issue causing delays in messages which were presented, while no messages were lost we continue to investigate the root cause. We expect to provide another update in 4 hour or as soon as more information becomes available.

  5. identified

    Our engineering team has identified and mitigated the issue causing delays in messages which were presented, while no messages were lost we continue to investigate the root cause. We expect to provide another update in 8 hours or as soon as more information becomes available.

  6. identified

    The message delays were caused by an issue with a single host and affected only a portion of SMS traffic for approximately one hour. Service was restored and has been stable since with no data loss. We have applied a preventive measure to avoid a recurrence and are validating a permanent fix. We will share our next update in 8 hours or as soon as new information is available.

  7. identified

    The message delays were caused by an issue with a single host and affected only a portion of SMS traffic for approximately one hour. Service was restored and has been stable since with no data loss. We have applied a preventive measure to avoid a recurrence and are validating a permanent fix. We will share our next update in 16 hours or as soon as new information is available.

  8. monitoring

    Messaging is operating normally. We will continue to monitor for system stability. We'll provide another update in 2 hours or as soon as more information becomes available.

  9. resolved

    We are no longer experiencing the issue causing delays in messages. This incident has been resolved.

What this means for a business (and what to check now)

  • Retry anything that failed during the 39.9 hours.
  • Enter any payments, bookings or jobs you took another way.
  • If a deadline fell inside the window, keep this page as your record of the outage.

The full guide: what to do when a service you rely on is down

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