https://approjects-vendor-status-watch.static.hf.space/v/courier.htmlIncidents from Courier's public status page, polled daily.Wed, 16 Sep 2026 12:28:20 +0000https://stspg.io/01f7ydq6xxlwcourier:2026-06-18T13:11:52.004-07:00Thu, 18 Jun 2026 20:11:52 +0000Send pipeline has resolved and enqueued messages are now sending properly.https://stspg.io/8vdrrzbyhrymcourier:2026-05-27T16:06:26.000-07:00Wed, 27 May 2026 23:06:26 +0000Please continue to monitor Slack's statuspage for any updates related to message deliverability: https://slack-status.com/https://stspg.io/yr3h56fl3c1mcourier:2026-02-02T12:07:08.817-08:00Mon, 02 Feb 2026 20:07:08 +0000# RFO: February 2, 2026 — Service Interruption ## Executive Summary On February 2, 2026, a deployment introduced a configuration change that referenced a file not present in our production build artifacts, causing backend services to become unavailable. API endpoints, automations, and tracking functionality were impacted for 2 hours and 17 minutes in the US region and 2 hours and 42 minutes in the Ireland region. Recovery was prolonged by a concurrent outage at GitHub Actions, our CI/CD provider, which prevented our standard automated rollback. Our team identified the root cause, executed a manual rollback independent of the affected provider, and restored full service across all regions. We have defined targeted action items to prevent recurrence. ## Incident Overview * **Affected serhttps://stspg.io/77yfmbx8sr7hcourier:2026-01-29T02:00:00.000-08:00Thu, 29 Jan 2026 10:00:00 +0000The Courier team identified an issue affecting observability metrics between 21:38 UTC and 22:13 UTC, during which metrics briefly experienced an outage. A fix was released and metrics are stabilized through observability channels. Metrics received during the outage window will not be accounted for in observability dashboards.https://stspg.io/y64bqb8vzm25courier:2026-01-14T13:47:10.871-08:00Wed, 14 Jan 2026 21:47:10 +0000Fix is out and application is stablehttps://stspg.io/dbl8v74y9xnscourier:2025-10-20T02:19:57.000-07:00Mon, 20 Oct 2025 09:19:57 +0000The incident has been resolvedhttps://stspg.io/9n639vr2wxj4courier:2025-10-16T22:33:05.648-07:00Fri, 17 Oct 2025 05:33:05 +0000Release is in production and Microsoft Teams messages are passing successfully.https://stspg.io/b5ly29z5s7sdcourier:2025-10-13T09:19:58.000-07:00Mon, 13 Oct 2025 16:19:58 +0000Courier experienced a slowdown in message delivery with Mailgun providers around 2AM PST. Our monitoring systems caught the spike in the bottleneck, which eventually stabilized. Our infrastructure team is actively monitoring.https://stspg.io/2lfmxnrzn1c3courier:2025-10-08T02:00:00.000-07:00Wed, 08 Oct 2025 09:00:00 +0000Courier's delivery platform experienced significant latency around 1am PST. Our platform team managed to resolve the issue and is actively monitoring for any potential issues.