SparkPost outage history
25 incidents from the official SparkPost status page, the oldest from 11 December 2025.
October 2026 2
-
, resolved after 3 h 5 min
Increased message delays in US and EU due to DNS resolution errors
Impact: minor
-
, resolved after 31 min
Impact: minor
September 2026 2
-
, resolved after 54 min
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)
Impact: minor
-
, resolved after 2 h 26 min
Health Score and Cohort data is delayed
Impact: minor
August 2026 2
-
, resolved after 4 h 53 min
Elevated hard bounces for Apple private relay recipients (privaterelay.appleid.com)
Impact: minor
-
, resolved after 1 h 5 min
Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only)
Impact: minor
July 2026 1
-
, resolved after 7 h 29 min
Partial Outage and Delivery Issues in US-West-2 Region
Impact: critical
June 2026 1
-
, resolved after 48 min
There is a delay effecting some mail sending in EU.
Impact: minor
May 2026 4
-
, resolved after 50 min
-
, resolved after 1 h 7 min
Impact: minor
-
, resolved after 38 min
-
, resolved after 26 h
Intermittent email injection failures affecting a small subset of customers in Europe
Impact: minor
April 2026 1
-
, resolved after 34 min
Increased bounce or delay rate for Apple domains
Impact: minor
March 2026 2
-
, resolved after 4 h 33 min
Email delivery in US region affected
Impact: major
-
, resolved after 33 min
Outbound message delivery is delayed/slow for some SparkPost customers (US and EU regions)
Impact: minor
February 2026 5
-
, resolved after 23 h 42 min
Microsoft Mail Delivery Delays and Temporary Rejections
Impact: minor
-
, resolved after 34 min
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)
Impact: major
-
, resolved after 3 h 15 min
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)
Impact: minor
-
, resolved after 27 min
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)
Impact: minor
-
, resolved after 2 h 15 min
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)
Impact: minor
January 2026 3
-
, resolved after 8 days
-
, resolved after 12 days
Delays in sending emails to Microsoft domains
Impact: minor
-
, resolved
Delays in sending emails to yahoo.com domain in EU and US regions
December 2025 2
-
, resolved after 3 h 51 min
Impact: minor
-
, resolved after 1 h 59 min
Impact: minor