Mailgun change history

Mailgun reported a critical EU messaging outage affecting API, SMTP, inbound email processing, outbound delivery, events and logs, and stats and analytics. It started at 2026-09-04 14:16 UTC and was resolved at 2026-09-04 14:33 UTC, lasting 17 min; a fix was implemented by 09-04 14:21 UTC.

Mailgun reported a critical EU datacenter messaging outage affecting API, SMTP, inbound processing, outbound delivery, events and logs, analytics, and the control panel. It started at 2026-08-27 20:38 UTC and resolved at 2026-08-27 21:16 UTC, lasting 37 min. Mailgun implemented a fix but did not specify the cause.

Mailgun reported a major denial-of-service attack against click and open tracking servers in US regions, causing some requests to time out or fail. The incident started at 2026-08-11 05:32 UTC and was resolved at 2026-08-11 07:07 UTC, lasting 1 h 35 min; a fix was implemented by 06:54 UTC.

Mailgun reported a critical incident involving US Email Validation 500 errors and an unavailable Control Panel, starting 2026-07-13 18:23 UTC and resolved at 2026-07-13 19:56 UTC (1 h 32 min). A fix was implemented and monitored; no cause was stated.

Mailgun reported a major incident making the Control Panel unavailable for some users, with Email Validation also listed as affected. It started at 2026-07-10 18:07 UTC and resolved at 2026-07-10 20:11 UTC, lasting 2 h 3 min; Mailgun rolled out a fix to impacted regions.

Mailgun reported critical delayed sending in the EU affecting API and Outbound Delivery services, starting 2026-05-25 12:18 UTC and resolved at 2026-05-25 15:55 UTC, with a reported duration of 3 h 36 min. A fix was implemented and monitored; no cause was stated.

Mailgun reported a major API incident: HTTPS clients without Server Name Indication (SNI) received an expired SSL/TLS certificate, causing certificate validation failures. It started at 2026-04-15 13:40 UTC and was resolved at 2026-04-15 15:34 UTC, lasting 1 h 54 min; a fix was implemented at 04-15 14:02 UTC.

Mailgun reported a major incident affecting API and Email Services - API in the US region, where some requests incorrectly failed with 401 errors. It started at 2026-03-19 18:43 UTC and lasted 10 min, resolving at 2026-03-19 18:53 UTC after a fix was deployed and systems returned to normal.

Mailgun reported a major degradation involving intermittent API errors in the US Region, affecting API and Email Services - API. It started at 2026-03-13 11:29 UTC and lasted 1 h 20 min, resolving at 2026-03-13 12:49 UTC after a fix was implemented; no cause was stated.

Mailgun reported intermittent email validation errors with major impact affecting API and Email Validation components from 2026-02-25 19:10 UTC to 2026-02-25 21:45 UTC, lasting 2 h 35 min. A fix was implemented by 02-25 21:36 UTC, and the incident was resolved.

Mailgun reported a major incident causing sending errors in US regions, affecting API, Email Services - API, and Email Services - Outbound Delivery. It began at 2025-09-12 10:07 UTC and was resolved at 2025-09-12 15:21 UTC, lasting 5 h 14 min. A fix was implemented, and all systems were operating normally at resolution.

Mailgun reported a major incident causing Email Validation 500 errors, affecting Deliverability Services - Email Validation and Email Validation. It started at 2025-09-11 22:56 UTC and was resolved at 2025-09-12 02:19 UTC, lasting 3 h 23 min; a fix was implemented and monitored before resolution.

Mailgun reported critical intermittent API errors affecting API, Control Panel, Email Validation and SMTP, starting 2025-05-14 18:38 UTC and resolving 2025-05-14 22:18 UTC after 3 h 40 min. Mailgun identified a routing issue in its internal service mesh and deployed a fix.

Mailgun reported a major outage involving connection errors to smtp.eu.mailgun.org, starting 2025-03-17 09:20 UTC and resolved 2025-03-17 19:44 UTC, lasting 10 h 24 min. A mitigation restored SMTP and inbound email processing in the EU region to full working behavior at 15:02 UTC.

Mailgun reported a major incident causing intermittent errors at login.mailgun.com and app.mailgun.com, affecting Control Panel and Customer Tools - Control Panel. It started at 2024-08-17 17:35 UTC and lasted 22 min, resolving at 2024-08-17 17:57 UTC; a fix was implemented at 17:52 UTC.