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SparkPost

sparkpost.com (opens in new tab)Status page (opens in new tab)

Status page says: Operational since Oct 19
Last 90 days: 7 incidents, 1 major or critical
Rewrites caught: None so far
Next deprecation: None announced

SparkPost incidents per day, last 90 days

Select a day to jump to its incidents below.

How SparkPost reports incidents

Not enough incidents to compare SparkPost with other vendors yet: a vendor needs 20 incidents in a year and 10 with full update detail (SparkPost has 39 and 0).

Provisional. Built nightly from every archived version of each incident, last on Oct 19. Compare all vendors

Dependencies

What SparkPost relies on and who relies on SparkPost, as observed in status-page incidents: who they blame, where they say they run, and who fails at the same time. Observed, not verified.

SparkPost depends on

Provider	Evidence	Signal
AWS	blamed in 2 incidents; together in 4 outage events “…his incident has been resolved. We are investigating delivery issues caused by an ongoing AWS US West 2 region outage. Customers may experience delays while we assess the impact to our service. We are…” incident	Strong
Apple	integration affected in 2 “…Increased bounce or delay rate for Apple domains Delivery rates to Apple domains have returned to normal with no further elevated delays or bounces. We will perform any necessary post-incident cleanup…” incident	Likely

Who depends on SparkPost

Vendor	Evidence	Signal
Braze	blamed in 6 incidents “…Email links for SparkPost customers serving 502s due to SparkPost incident SparkPost have resolved the incident on their side. Braze has not observed any recurrence in HTTP 502 errors for click-tracke…” incident	Strong
Iterable	blamed in 2 incidents “…Email send delays for some US-hosted SparkPost traffic SparkPost’s API issue has been resolved, and we’re no longer seeing elevated 5xx errors or increased latency. Incident has resolved. Email sends…” incident	Strong

Outage events: AWS us-east-1, Oct 20, 2025 (timing), AWS, Sep 18, 2023 (timing), AWS, Dec 15, 2021 (timing), AWS us-east-1, Dec 7, 2021 (timing).

Strong: same company, or blamed in two separate outages. Likely: blamed once, or named as hosting and failing together. Weak: listed as a subprocessor, integration-only, or failing together repeatedly without being named.

Changes and edits

Incidents SparkPost rewrote or removed, and notable changes to the pages we watch.

~~Struck in red~~ is what SparkPost removed. Blue is what they added.

Friday, July 24

1 incident change

Critical
11:14Critical incident
Partial Outage and Delivery Issues in US-West-2 Region

Thursday, March 12

1 incident change

Major
06:51Major incident
Email delivery in US region affected

Tuesday, February 24

1 incident change

Major
19:07Major incident
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)

Full SparkPost change history

Pricing and pages we watch

No pricing, trust or legal pages tracked for SparkPost.

Each change links to its diff: the changed passages with a few words of context, never a full copy of the page.

Incidents

Latest 100 of 416 incidents since May 19, 2016, 31 of them major or critical. Maintenance is left out.

Per year, major and critical in amber:

Sunday, October 11

1 incident

Minor, 3 h 6 min
17:51Minor incident
Increased message delays in US and EU due to DNS resolution errors Vendor status page⁠ (opens in new tab)

Thursday, October 1

1 incident

Minor, 31 min
17:05Minor incident
Mail delivery delays Vendor status page⁠ (opens in new tab)

Thursday, September 17

1 incident

Minor, 54 min
09:06Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Monday, September 14

1 incident

Minor, 2 h 27 min
14:19Minor incident
Health Score and Cohort data is delayed Vendor status page⁠ (opens in new tab)

Thursday, August 27

1 incident

Minor, 4 h 54 min
18:03Minor incident
Elevated hard bounces for Apple private relay recipients (privaterelay.appleid.com)Vendor status page⁠ (opens in new tab)

Wednesday, August 19

1 incident

Minor, 1 h 6 min
18:52Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)

Friday, July 24

1 incident, 1 major or critical

Critical, 7 h 30 min
11:14Critical incident
Partial Outage and Delivery Issues in US-West-2 Region Vendor status page⁠ (opens in new tab)

Monday, June 29

1 incident

Minor, 48 min
15:58Minor incident
There is a delay effecting some mail sending in EU.Vendor status page⁠ (opens in new tab)

Tuesday, May 12

1 incident

No impact listed, 50 min
12:48Incident, no impact listed
Issue with updating payment information Vendor status page⁠ (opens in new tab)

Monday, May 11

1 incident

Minor, 1 h 7 min
18:55Minor incident
Elevated 5xx Suppression List API error rates and latency for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Saturday, May 9

1 incident

No impact listed, 38 min
21:39Incident, no impact listed
Delayed delivery for some messages in EU Vendor status page⁠ (opens in new tab)

Thursday, May 7

1 incident

Minor, 26 h
09:31Minor incident
Intermittent email injection failures affecting a small subset of customers in Europe Vendor status page⁠ (opens in new tab)

Sunday, April 5

1 incident

Minor, 34 min
18:27Minor incident
Increased bounce or delay rate for Apple domains Vendor status page⁠ (opens in new tab)

Thursday, March 12

1 incident, 1 major or critical

Major, 4 h 34 min
06:51Major incident
Email delivery in US region affected Vendor status page⁠ (opens in new tab)

Thursday, March 5

1 incident

Minor, 33 min
00:51Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US and EU regions)Vendor status page⁠ (opens in new tab)

Thursday, February 26

1 incident

Minor, 23 h 43 min
17:55Minor incident
Microsoft Mail Delivery Delays and Temporary Rejections Vendor status page⁠ (opens in new tab)

Tuesday, February 24

2 incidents, 1 major or critical

Major, 34 min
19:07Major incident
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)
Minor, 3 h 15 min
15:01Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Friday, February 20

1 incident

Minor, 27 min
16:06Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, February 18

1 incident

Minor, 2 h 16 min
14:51Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, January 27

1 incident

No impact listed, 9 days
16:39Incident, no impact listed
SSO Login Failures Due to reCAPTCHA Configuration Issue Vendor status page⁠ (opens in new tab)

Thursday, January 15

1 incident

Minor, 12 days
11:06Minor incident
Delays in sending emails to Microsoft domains Vendor status page⁠ (opens in new tab)

Wednesday, January 14

1 incident

No impact listed, under a minute
16:27Incident, no impact listed
Delays in sending emails to yahoo.com domain in EU and US regions Vendor status page⁠ (opens in new tab)

Thursday, December 11, 2025

2 incidents

Minor, 3 h 52 min
18:36Minor incident
Delay in event processing.Vendor status page⁠ (opens in new tab)
Minor, 2 h
16:34Minor incident
Longer than expected delays Vendor status page⁠ (opens in new tab)

Wednesday, December 10, 2025

2 incidents

Minor, 3 h 11 min
21:22Minor incident
Data processing delays Vendor status page⁠ (opens in new tab)
Minor, 2 h 29 min
03:40Minor incident
Increased error rates and latency from our APIs Vendor status page⁠ (opens in new tab)

Monday, December 8, 2025

1 incident

Minor, 3 h 8 min
02:24Minor incident
Data Process is delayed for Sparkpost US - EU Vendor status page⁠ (opens in new tab)

Friday, December 5, 2025

1 incident

Minor, 3 h 7 min
19:16Minor incident
Data processing delays for SparkPost customers - US and EU regions Vendor status page⁠ (opens in new tab)

Friday, November 28, 2025

1 incident

Minor, 37 min
09:40Minor incident
Yahoo Mail Sending Delays Vendor status page⁠ (opens in new tab)

Thursday, November 27, 2025

2 incidents

Minor, 1 h 1 min
14:22Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)
Minor, 1 h 37 min
11:24Minor incident
High response times on the API Vendor status page⁠ (opens in new tab)

Friday, November 21, 2025

1 incident

No impact listed, 1 h 23 min
09:08Incident, no impact listed
Intermittent email api failures impacting EU customers Vendor status page⁠ (opens in new tab)

Thursday, November 20, 2025

1 incident

Minor, 2 h 27 min
15:56Minor incident
Webhook delays for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, November 11, 2025

1 incident

Minor, 1 h 35 min
14:35Minor incident
SMTP message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Monday, November 10, 2025

1 incident

Minor, 1 h 4 min
22:06Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, November 4, 2025

1 incident

Minor, 3 min
21:33Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, October 28, 2025

1 incident

Minor, 1 h 53 min
18:51Minor incident
Outbound message delivery is slightly delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Monday, October 20, 2025

1 incident

Minor, 1 h 14 min
10:55Minor incident
Transmissions API - Elevated error rate in US region Vendor status page⁠ (opens in new tab)Event

Monday, October 13, 2025

1 incident

No impact listed, 3 h 14 min
08:28Incident, no impact listed
Captcha error for login with password Vendor status page⁠ (opens in new tab)

Wednesday, September 24, 2025

1 incident

Minor, 1 h 46 min
15:34Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)

Friday, September 12, 2025

1 incident

Minor, 6 h 41 min
14:55Minor incident
Data processing delays Vendor status page⁠ (opens in new tab)

Thursday, July 24, 2025

1 incident

Minor, 3 h 39 min
17:41Minor incident
Outbound message delivery to Yahoo is delayed/slow Vendor status page⁠ (opens in new tab)

Sunday, May 18, 2025

1 incident

Minor, 4 h 5 min
14:58Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Friday, May 16, 2025

1 incident

Minor, 25 min
15:53Minor incident
Relay Webhook delays in EU Vendor status page⁠ (opens in new tab)

Tuesday, May 13, 2025

1 incident

Minor, 6 h 7 min
05:22Minor incident
Elevated percentage of API calls failing Vendor status page⁠ (opens in new tab)

Monday, May 12, 2025

1 incident

Minor, 1 h 5 min
16:39Minor incident
Relay Webhook delays in EU Vendor status page⁠ (opens in new tab)

Friday, March 28, 2025

1 incident

No impact listed, 7 h 12 min
16:03Incident, no impact listed
Delay Processing Delays for March 26th Vendor status page⁠ (opens in new tab)

Thursday, March 20, 2025

1 incident

No impact listed, 55 min
08:51Incident, no impact listed
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, February 26, 2025

1 incident

No impact listed, 1 h 48 min
17:24Incident, no impact listed
Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, January 15, 2025

1 incident

No impact listed, 17 min
12:27Incident, no impact listed
Elevated error rates for some SparkPost customers injecting via SMTP in the US region.Vendor status page⁠ (opens in new tab)

Tuesday, January 14, 2025

1 incident

Minor, 10 min
16:13Minor incident
EU Delay in message processing Vendor status page⁠ (opens in new tab)

Monday, December 23, 2024

1 incident

Minor, 1 h 45 min
15:32Minor incident
Delayed email delivery in EU Vendor status page⁠ (opens in new tab)

Friday, November 29, 2024

1 incident

Minor, 7 h 46 min
08:36Minor incident
Delayed email delivery in EU west 1 Vendor status page⁠ (opens in new tab)

Sunday, November 24, 2024

1 incident

Minor, 25 min
09:31Minor incident
delayed email delivery in EU west 1 Vendor status page⁠ (opens in new tab)

Friday, November 22, 2024

2 incidents

Minor, 4 h 45 min
16:00Minor incident
High load on SMTP processing Vendor status page⁠ (opens in new tab)
Minor, 7 h 3 min
14:23Minor incident
Elevated 5xx for Engagement Tracker for SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, November 20, 2024

1 incident

No impact listed, 28 h 14 min
22:21Incident, no impact listed
Elevated 5xx for Engagement Tracker for SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, November 5, 2024

2 incidents, 2 major or critical

Critical, 7 min
20:31Critical incident
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)
Critical, 3 h 23 min
16:53Critical incident
Elevated 5xx error rates on engagement service for SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Friday, October 18, 2024

1 incident

Minor, 19 min
23:17Minor incident
SparkPost application (webUI) errors on some pages Vendor status page⁠ (opens in new tab)

Tuesday, October 15, 2024

1 incident, 1 major or critical

Major, 3 h 13 min
14:48Major incident
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, October 8, 2024

1 incident

Minor, 1 h 31 min
12:26Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)

Friday, September 27, 2024

1 incident

No impact listed, 4 h 29 min
17:47Incident, no impact listed
Yahoo Missing Spam Complaints Vendor status page⁠ (opens in new tab)

Wednesday, September 11, 2024

2 incidents

Minor, 45 min
19:35Minor incident
Elevated 5xx error rates and latency on Suppression List API for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)
Minor, 37 min
17:29Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, July 10, 2024

1 incident

Minor, 4 h 24 min
05:38Minor incident
Email Deliverability Issues Vendor status page⁠ (opens in new tab)

Friday, June 14, 2024

2 incidents

Minor, 28 min
16:52Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)
Minor, 1 h 7 min
12:30Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Thursday, June 13, 2024

1 incident, 1 major or critical

Critical, 1 h 33 min
20:03Critical incident
Alerts are not being sent.Vendor status page⁠ (opens in new tab)

Thursday, May 23, 2024

1 incident, 1 major or critical

Major, 13 h 32 min
09:39Major incident
Analytics/metrics dashboards are not loading or taking a long time to load for US accounts Vendor status page⁠ (opens in new tab)

Tuesday, May 21, 2024

1 incident

Minor, 4 h 22 min
15:10Minor incident
Current Metrics Data not Available in US Vendor status page⁠ (opens in new tab)

Friday, May 3, 2024

1 incident, 1 major or critical

Major, 1 h 59 min
17:10Major incident
Metrics API experiencing slowness Vendor status page⁠ (opens in new tab)

Tuesday, April 30, 2024

1 incident

Minor, 47 h 52 min
18:26Minor incident
Data processing delays for SparkPost customers - US region Vendor status page⁠ (opens in new tab)

Friday, April 19, 2024

1 incident

No impact listed, 4 days
14:10Incident, no impact listed
Signals Analytics reports are slow to load Vendor status page⁠ (opens in new tab)

Thursday, April 18, 2024

2 incidents

No impact listed, 9 h 37 min
17:09Incident, no impact listed
Data processing delays Vendor status page⁠ (opens in new tab)
Minor, 1 h 8 min
13:00Minor incident
SparkPost application (webUI) is slow to load or timing out Vendor status page⁠ (opens in new tab)

Wednesday, April 10, 2024

1 incident

Minor, 13 min
21:30Minor incident
Elevated 5xx Transmissions API error rates and latency for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Thursday, March 28, 2024

1 incident

Minor, 3 days
18:43Minor incident
Data processing delays for SparkPost customers - US region Vendor status page⁠ (opens in new tab)

Thursday, March 14, 2024

1 incident

Minor, 32 min
16:35Minor incident
Elevated 5xx Transmissions API error rates for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, February 28, 2024

1 incident

Minor, 5 h 25 min
18:23Minor incident
Deliverability metric missing IP Pool Name and Template ID filters February 23rd, 2024 Vendor status page⁠ (opens in new tab)

Friday, February 23, 2024

1 incident

Minor, 29 h 15 min
13:10Minor incident
Data processing delays for SparkPost customers - US region Vendor status page⁠ (opens in new tab)

Monday, February 19, 2024

1 incident, 1 major or critical

Major, 11 min
17:27Major incident
Delay in Email Delivery for Some US Customers Vendor status page⁠ (opens in new tab)

Thursday, February 15, 2024

1 incident

Minor, 21 days
16:37Minor incident
Ongoing issues for messages destined to Office 365 domains Vendor status page⁠ (opens in new tab)

Friday, February 9, 2024

1 incident

No impact listed, 3 days
21:29Incident, no impact listed
Elevated opens and clicks for messages delivered to Office 365 addresses Vendor status page⁠ (opens in new tab)

Tuesday, February 6, 2024

1 incident

No impact listed, 28 h 7 min
17:56Incident, no impact listed
We are observing an elevated rate of spam foldering and open rates for messages destined to Office 365 domains Vendor status page⁠ (opens in new tab)

Wednesday, January 24, 2024

1 incident

Minor, 1 h 10 min
13:08Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Tuesday, January 16, 2024

1 incident

No impact listed, 49 min
20:47Incident, no impact listed
Webhooks: Duplicate message events for some customers (US REGION)Vendor status page⁠ (opens in new tab)

Monday, December 18, 2023

1 incident

No impact listed, under a minute
04:30Incident, no impact listed
SMTP performance degradation in US cluster Vendor status page⁠ (opens in new tab)

Monday, December 11, 2023

1 incident

No impact listed, 21 min
17:48Incident, no impact listed
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Friday, December 1, 2023

1 incident

Minor, 1 h 27 min
12:50Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Monday, November 27, 2023

2 incidents

No impact listed, 5 h 49 min
21:10Incident, no impact listed
Slow delivery to Comcast Vendor status page⁠ (opens in new tab)
Minor, 8 h 51 min
17:00Minor incident
Data Delays for Signals Reports & Metrics API for SparkPost Customers - US Region Vendor status page⁠ (opens in new tab)

Friday, November 24, 2023

1 incident

Minor, 7 h 25 min
17:56Minor incident
Data delays for Signals Reports & Metrics API for SparkPost customers - US region Vendor status page⁠ (opens in new tab)

Wednesday, November 22, 2023

1 incident

Minor, 2 h 46 min
15:09Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Thursday, November 16, 2023

1 incident

Minor, 3 h 25 min
15:01Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, October 25, 2023

1 incident

No impact listed, 7 h 52 min
20:55Incident, no impact listed
SparkPost Application (webUI): Health Score Data is Delayed (US Region)Vendor status page⁠ (opens in new tab)

Monday, September 18, 2023

1 incident

Minor, 16 h 29 min
18:09Minor incident
Elevated 5xx Transmissions API error rates and Webhook delays for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)Event

Thursday, September 14, 2023

1 incident

Minor, 27 min
18:04Minor incident
Webhook delays for some SparkPost customers (EU hosted only)Vendor status page⁠ (opens in new tab)

Wednesday, September 13, 2023

1 incident

Minor, 2 h 21 min
15:12Minor incident
Outbound message delivery is delayed/slow for some SparkPost customers (US hosted only)Vendor status page⁠ (opens in new tab)

SparkPost incidents, last 90 days JSON Markdown