Courier Outage History
Daily status observations, past incidents, and reported issue history for Courier.
Checking current status...
90-Day Trend
Monthly Status Summary
| Month | Issue-free days | Days Tracked | Days with Issues |
|---|---|---|---|
| August 2026 | 100% | 25 | 0 |
| July 2026 | 93.5% | 31 | 2 |
| June 2026 | 96.7% | 30 | 1 |
| May 2026 | 80% | 5 | 1 |
This percentage summarizes normalized provider-status observations by calendar day. It is not duration-based, component-weighted, or contractual uptime. See the methodology and limitations.
Daily Status (Last 91 Days)
May 27
Today
Operational
Degraded
Partial Outage
Major Outage
Maintenance
No Data
Incident History
June 2026
Send Pipeline Latency
Started:
monitoring
Messages are being processed while our pipeline continues to process enqueued messages.
identified
The team has identified that the most recent deployment was not the cause of the regression. The team is still working on identifying the root cause. Messages will not be dropped, and they will be processed once the fix is out.
identified
The rollback deploy will land in about 30 minutes.
identified
The team has identified a regression causing send requests to be stuck in a queued state. We have initiated a rollback to quickly resolve the issue. More updates to follow
May 2026
Slack Deliverability Issues
Started:
monitoring
Slack has reported messaging, and app degredation on their platform that could be impacting deliverability of Slack messages. This is a downstream provider issue and can be monitored on Slack's statuspage: https://slack-status.com/