All Systems Operational

Uptime over the past 90 days. View historical uptime.
SparkPost Application (WebUI) Operational
90 days ago
100.0 % uptime
Today
SparkPost Application - USA Operational
90 days ago
100.0 % uptime
Today
SparkPost Application - EUROPE Operational
90 days ago
100.0 % uptime
Today
SMTP Delivery (Outbound Message Delivery) Operational
90 days ago
100.0 % uptime
Today
SMTP Delivery - USA Operational
90 days ago
100.0 % uptime
Today
SMTP Delivery - EUROPE Operational
90 days ago
100.0 % uptime
Today
Transmissions API Operational
90 days ago
99.99 % uptime
Today
Transmissions API - USA Operational
90 days ago
99.99 % uptime
Today
Transmissions API - EUROPE Operational
90 days ago
100.0 % uptime
Today
SMTP API Operational
90 days ago
100.0 % uptime
Today
SMTP API - USA Operational
90 days ago
100.0 % uptime
Today
SMTP API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Metrics API Operational
90 days ago
100.0 % uptime
Today
Metrics API - USA Operational
90 days ago
100.0 % uptime
Today
Metrics API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Events API Operational
90 days ago
100.0 % uptime
Today
Events API - USA Operational
90 days ago
100.0 % uptime
Today
Events API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Relay Webhooks Delivery Service Operational
90 days ago
100.0 % uptime
Today
Relay Webhooks - USA Operational
90 days ago
100.0 % uptime
Today
Relay Webhooks - EUROPE Operational
90 days ago
100.0 % uptime
Today
Sending Domains API Operational
90 days ago
100.0 % uptime
Today
Sending Domains API - USA Operational
90 days ago
100.0 % uptime
Today
Sending Domains API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Suppression List API Operational
90 days ago
100.0 % uptime
Today
Suppression List API - USA Operational
90 days ago
100.0 % uptime
Today
Suppression List API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Event Webhook Delivery Service Operational
90 days ago
100.0 % uptime
Today
Event Webhooks - USA Operational
90 days ago
100.0 % uptime
Today
Event Webhooks - EUROPE Operational
90 days ago
100.0 % uptime
Today
Engagement Tracking Service Operational
90 days ago
100.0 % uptime
Today
Engagement Tracking Service (redirecting clicks and serving opens) - USA Operational
90 days ago
100.0 % uptime
Today
Engagement Tracking Service (redirecting clicks and serving opens) - EUROPE Operational
90 days ago
100.0 % uptime
Today
Mailbox Provider Service Interruption Operational
Blocklist API Operational
90 days ago
100.0 % uptime
Today
Blocklist API - USA Operational
90 days ago
100.0 % uptime
Today
Blocklist API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Alerts API Operational
90 days ago
100.0 % uptime
Today
Alerts API - USA Operational
90 days ago
100.0 % uptime
Today
Alerts API - EUROPE Operational
90 days ago
100.0 % uptime
Today
Operational
Degraded Performance
Partial Outage
Major Outage
Maintenance
Major outage
Partial outage
No downtime recorded on this day.
No data exists for this day.
had a major outage.
had a partial outage.

No incidents or maintenance related to this downtime.

Mar 10, 2026

No incidents reported today.

Mar 9, 2026

No incidents reported.

Mar 8, 2026

No incidents reported.

Mar 7, 2026

No incidents reported.

Mar 6, 2026

No incidents reported.

Mar 5, 2026

No incidents reported.

Mar 4, 2026
Outbound message delivery is delayed/slow for some SparkPost customers (US and EU regions)
Resolved - This incident has been resolved.
Mar 4, 20:24 EST
Monitoring - We are observing recovery in email delivery performance and are actively monitoring.
Mar 4, 20:00 EST
Investigating - We are investigating an increase in delivery latency for some outbound messages.
Mar 4, 19:51 EST
Mar 3, 2026

No incidents reported.

Mar 2, 2026

No incidents reported.

Mar 1, 2026

No incidents reported.

Feb 28, 2026

No incidents reported.

Feb 27, 2026
Microsoft Mail Delivery Delays and Temporary Rejections
Resolved - Microsoft has confirmed that they made additional changes the night of Thursday, Feb 26th that should have remediated most IP rate limiting and rejection issues. If you are still seeing impacts, please reach out via your normal support channels and our team can investigate and escalate with Microsoft.
Feb 27, 12:38 EST
Monitoring - We are currently seeing elevated temporary rejection rates for email delivered to Outlook.com, Hotmail, and other Microsoft-hosted addresses. Microsoft has acknowledged the issue and is actively investigating. This is a industry-wide issue and not isolated to any specific account. We will continue to monitor and update this page as we receive more information.

Next update: When Microsoft posts a resolution or Bird observes delivery rates normalizing
Feb 26, 12:55 EST
Feb 26, 2026
Feb 25, 2026

No incidents reported.

Feb 24, 2026
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)
Resolved - This incident has been resolved.
Feb 24, 14:41 EST
Monitoring - A fix has been implemented and we are monitoring the results.
Feb 24, 14:38 EST
Identified - The team has identified the root cause. There is a core networking issue that has impacted sending across the clusters.
Feb 24, 14:34 EST
Update - We are continuing to investigate this issue. We still see 5xx errors on mail injections and degradation.
Feb 24, 14:25 EST
Update - We are continuing to investigate this issue.
Feb 24, 14:07 EST
Investigating - We are experiencing an elevated level of errors and latency on the Transmissions API (injection API) for some SparkPost customers. Please retry any 5xx error.

Note: This issue does not impact SparkPost customers hosted in the EU.
Feb 24, 14:07 EST
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)
Resolved - This incident has been resolved.
Feb 24, 13:17 EST
Monitoring - A fix has been implemented and we are monitoring the results.
Feb 24, 12:34 EST
Identified - The issue has been identified and a fix is being implemented.
Feb 24, 12:19 EST
Investigating - We are currently investigating this issue. No messages are lost.
Feb 24, 10:01 EST
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