GCP Reporting Multi Service Outage in US-West1

What to do

• Check whether you use Mailgun Outbound Delivery, Events & Logs in us, us-west1. Check your stack

  Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.

• Confirm your retries, queues and scheduled jobs caught up after the 1h 12m it lasted.

  Anything that failed between 2026-08-20 16:19 UTC and 2026-08-20 17:31 UTC may need a replay.

• Subscribe to Mailgun's feed to hear about the next one first. RSS feed

  https://down.guide/feed?provider=mailgun works in Slack (/feed subscribe), Discord feed bots and any RSS reader.

Updates from Mailgun 4

1. monitoringAug 20, 2026, 4:19 PM UTC

   Mailgun is monitoring service impacts in GCP's us-west1 region. We are routing traffic away from impacted infrastructure. Currently we are seeing delays in log processing and a small number of message sends.

   provider

2. monitoringAug 20, 2026, 4:30 PM UTC

   Outbound delivery is operating normally. Currently there are delays for event logs and some webhooks.

   provider

3. monitoringAug 20, 2026, 5:09 PM UTC

   GCP has put a mitigation in place, we are monitoring the results. At this time we are experiencing no impacts. All delayed webhooks and logs have been processed.

   provider

4. resolvedAug 20, 2026, 5:31 PM UTC

   This incident has been resolved.

   provider

Corrections

None so far.

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