Outage report · Partial outage

Loops outage on Oct 20, 2025

Transactional email, webhooks, SMTP interruptions

SeverityPartial outage

StartedOct 20, 2025, 08:30UTC

ResolvedOct 20, 2025, 10:47UTC

Duration2h 17m

What happened

Loops reported a partial outage starting Oct 20, 2025, 08:30 UTC, affecting Transactional. It was marked resolved at Oct 20, 2025, 10:47 UTC.

The incident lasted 2h 17m from first report to resolution.
Loops had reported 1 other partial or major outage in the 90 days before it.
12 other vendors we track reported a significant incident within 12 hours of it.

Latest update from Loops

On October 20 2025, Loops was impacted by AWS’s outage in the US-EAST-1 region. We observed a variety of misbehaviors during that time, some more serious than others. Overall, the impact to Loops fell within the wider window provided by AWS \(06:49 UTC to 22:53 UTC\). During the outage, we experienced temporary but notable impact to, * Transactional email sending. * Webhook delivery. * Incoming request routing to our SMTP service. **Transactional email** Between 7:02 UTC and 9:18 UTC, transactional email sending was impacted. During this window the Loops API may have accepted transactional requests but failed to send them. Impacted messages were not resent later as we do not store the raw payloads. Timeline: * 7:02 UTC: We began experiencing elevated error rates related to transactional email sending, manifesting as increasing rates of HTTP 500 responses from AWS APIs. * 9:18 UTC: AWS API error rates subside. Transactional sending returns to normal. **Webhooks** Between 9:30 UTC

Read Loops's official incident report ↗