SparkPost status is Operational

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SMTP Delivery - USA
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SMTP Delivery - EUROPE
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Last updated 1 minute ago from official status page. Learn more
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Active Incidents

No active incidents

Recently Resolved Incidents

Increased message delays in US and EU due to DNS resolution errors
Started 11 Oct 2026 17:51:53 (2 days ago), resolved 11 Oct 2026 20:57:43 (2 days ago)
Minor Incident
Resolved
SMTP Delivery - USA
SMTP Delivery - EUROPE

We are investigating an increase in delayed (deferred) messages in both our US and EU regions, beginning at approximately 14:40 UTC on October 11. A subset of our internal DNS resolvers are intermittently failing to resolve recipient domains, causing some delivery attempts to be temporarily deferred.

Affected messages are not being dropped or bounced. Retries are succeeding as they are routed to healthy resolvers, so impacted messages are being delivered with additional latency. Customers may observe an elevated number of delay events in webhooks, event logs, and reporting during this time.

We have identified the cause as a DNSSEC validation issue on a portion of our resolver fleet related to a scheduled update of the internet's root DNS signing key, and are applying a fix. No action is required from customers. We will provide an update within 60 minutes or as soon as we have more information.

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    SparkPost Components

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    SparkPost Application (WebUI)

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    SparkPost Application - USA
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    SparkPost Application - EUROPE
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    SparkPost SMTP Delivery (Outbound Message Delivery)

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    SMTP Delivery - USA
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    Increased message delays in US and EU due to DNS resolution errors
    Started 11 Oct 2026 17:51:53 (2 days ago), resolved 11 Oct 2026 20:57:43 (2 days ago)
    Minor Incident
    Resolved
    SMTP Delivery - USA
    SMTP Delivery - EUROPE

    We are investigating an increase in delayed (deferred) messages in both our US and EU regions, beginning at approximately 14:40 UTC on October 11. A subset of our internal DNS resolvers are intermittently failing to resolve recipient domains, causing some delivery attempts to be temporarily deferred.

    Affected messages are not being dropped or bounced. Retries are succeeding as they are routed to healthy resolvers, so impacted messages are being delivered with additional latency. Customers may observe an elevated number of delay events in webhooks, event logs, and reporting during this time.

    We have identified the cause as a DNSSEC validation issue on a portion of our resolver fleet related to a scheduled update of the internet's root DNS signing key, and are applying a fix. No action is required from customers. We will provide an update within 60 minutes or as soon as we have more information.

    SMTP Delivery - EUROPE
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    now
    Increased message delays in US and EU due to DNS resolution errors
    Started 11 Oct 2026 17:51:53 (2 days ago), resolved 11 Oct 2026 20:57:43 (2 days ago)
    Minor Incident
    Resolved
    SMTP Delivery - USA
    SMTP Delivery - EUROPE

    We are investigating an increase in delayed (deferred) messages in both our US and EU regions, beginning at approximately 14:40 UTC on October 11. A subset of our internal DNS resolvers are intermittently failing to resolve recipient domains, causing some delivery attempts to be temporarily deferred.

    Affected messages are not being dropped or bounced. Retries are succeeding as they are routed to healthy resolvers, so impacted messages are being delivered with additional latency. Customers may observe an elevated number of delay events in webhooks, event logs, and reporting during this time.

    We have identified the cause as a DNSSEC validation issue on a portion of our resolver fleet related to a scheduled update of the internet's root DNS signing key, and are applying a fix. No action is required from customers. We will provide an update within 60 minutes or as soon as we have more information.

    SparkPost Transmissions API

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    Transmissions API - USA
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    Transmissions API - EUROPE
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    SparkPost SMTP API

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    SMTP API - USA
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    SMTP API - EUROPE
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    SparkPost Metrics API

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    Metrics API - USA
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    Metrics API - EUROPE
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    SparkPost Events API

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    Events API - USA
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    Events API - EUROPE
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    SparkPost Relay Webhooks Delivery Service

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    Relay Webhooks - USA
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    Relay Webhooks - EUROPE
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    SparkPost Sending Domains API

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    Sending Domains API - USA
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    Sending Domains API - EUROPE
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    SparkPost Suppression List API

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    Suppression List API - USA
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    Suppression List API - EUROPE
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    SparkPost Event Webhook Delivery Service

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    Event Webhooks - USA
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    Event Webhooks - EUROPE
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    SparkPost Engagement Tracking Service

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    Engagement Tracking Service (redirecting clicks and serving opens) - USA
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    Engagement Tracking Service (redirecting clicks and serving opens) - EUROPE
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    SparkPost Mailbox Provider Service Interruption

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    SparkPost Blocklist API

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    Blocklist API - USA
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    Blocklist API - EUROPE
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    SparkPost Alerts API

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    Alerts API - USA
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    Alerts API - EUROPE
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