Delays in outbound email delivery

What to do

• Check whether your product depends on Pylon. 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 4h 35m it lasted.

  Anything that failed between 2026-06-04 23:39 UTC and 2026-06-05 04:14 UTC may need a replay.

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

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

Updates from Pylon 2

1. monitoringJun 4, 2026, 11:39 PM UTC

   We're investigating delays in outbound email delivery from Pylon related to degraded performance at a third-party email delivery provider that Pylon relies on for sending. Email is still being accepted and queued - outbound messages may be delayed until the provider recovers. No email is being lost. We're monitoring the provider's status closely. The upstream provider is actively working on a resolution. Email continues to be queued and will be delivered once their service is restored. We'll post another update as delivery returns to normal. [https://status.postmarkapp.com/notices/cjagqohtofnqt9ts-email-sending-delays](https://status.postmarkapp.com/notices/cjagqohtofnqt9ts-email-sending-delays "https://status.postmarkapp.com/notices/cjagqohtofnqt9ts-email-sending-delays")

   provider

2. resolvedJun 5, 2026, 4:14 AM UTC

   The issue has been resolved and all systems are operational.

   provider

Corrections

None so far.

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