Mailgun Outage History

Mailgun is up right now

Mailgun had 38 outages in the last 2 years totaling 69h 9m of downtime — averaging 1.6 incidents per month.

There were 38 Mailgun outages since September 30, 2024 totaling 69h 9m of downtime. Each is summarised below — incident details, duration, and resolution information.

Source: http://status.mailgun.com

Minor August 20, 2026

GCP Reporting Multi Service Outage in US-West1

Detected by Pingoru
Aug 20, 2026, 04:19 PM UTC
Resolved
Aug 20, 2026, 05:31 PM UTC
Duration
1h 12m
Affected: Outbound DeliveryEvents & Logs
Timeline · 4 updates
  1. monitoring Aug 20, 2026, 04:19 PM UTC

    Mailgun is monitoring service impacts in GCP's us-west1 region. We are routing traffic away from impacted infrastructure. Currently we are seeing delays in log processing and a small number of message sends.

  2. monitoring Aug 20, 2026, 04:30 PM UTC

    Outbound delivery is operating normally. Currently there are delays for event logs and some webhooks.

  3. monitoring Aug 20, 2026, 05:09 PM UTC

    GCP has put a mitigation in place, we are monitoring the results. At this time we are experiencing no impacts. All delayed webhooks and logs have been processed.

  4. resolved Aug 20, 2026, 05:31 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice August 17, 2026

Email Delivery Failures to Microsoft 365 Domains

Detected by Pingoru
Aug 17, 2026, 08:18 PM UTC
Resolved
Aug 17, 2026, 08:18 PM UTC
Duration
—
Affected: Outbound Delivery
Timeline · 1 update
  1. resolved Aug 17, 2026, 08:18 PM UTC

    We have received confirmation that an external issue impacting email delivery to Microsoft 365 domains has been resolved. Impacted messages would have received an error stating "5.7.511 Access denied, banned sender" between Friday, August 14th and Monday, August 17th. Any failed messages will need to be resent. Information on retrying messages can be found in our Help Center here: https://help.mailgun.com/hc/en-us/articles/18596982041883-Resending-messages

Read the full incident report →

Major August 11, 2026

Click and Open Tracking Degraded (US Regions)

Detected by Pingoru
Aug 11, 2026, 05:32 AM UTC
Resolved
Aug 11, 2026, 07:07 AM UTC
Duration
1h 35m
Affected: Events & Logs
Timeline · 4 updates
  1. investigating Aug 11, 2026, 05:32 AM UTC

    We are currently experiencing a denial of service attack against our click and open tracking servers. Remediation work is underway. Some requests may time out or fail at this time.

  2. identified Aug 11, 2026, 05:32 AM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Aug 11, 2026, 06:54 AM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Aug 11, 2026, 07:07 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor July 24, 2026

Route delays in EU Region

Detected by Pingoru
Jul 24, 2026, 12:27 PM UTC
Resolved
Jul 24, 2026, 01:49 PM UTC
Duration
1h 21m
Affected: Inbound email processing
Timeline · 5 updates
  1. investigating Jul 24, 2026, 12:27 PM UTC

    Inbound messages processed by routes are currently experiencing delays in processing.

  2. identified Jul 24, 2026, 12:38 PM UTC

    The issue has been identified and a fix is being implemented.

  3. identified Jul 24, 2026, 01:16 PM UTC

    We are continuing to work on a fix for this issue.

  4. monitoring Jul 24, 2026, 01:18 PM UTC

    A fix has been implemented and we are monitoring the results. Delayed messages are being processed.

  5. resolved Jul 24, 2026, 01:49 PM UTC

    All delayed messages have been processed. Systems are operating normally

Read the full incident report →

Critical July 13, 2026

US Email Validation 500's and Mailgun Control Panel Unavailable

Detected by Pingoru
Jul 13, 2026, 06:23 PM UTC
Resolved
Jul 13, 2026, 07:56 PM UTC
Duration
1h 32m
Affected: Control PanelEmail Validation
Timeline · 5 updates
  1. investigating Jul 13, 2026, 06:23 PM UTC

    We are currently investigating this issue.

  2. investigating Jul 13, 2026, 06:51 PM UTC

    We are continuing to investigate this issue.

  3. identified Jul 13, 2026, 07:24 PM UTC

    The issue has been identified and a fix is being implemented.

  4. monitoring Jul 13, 2026, 07:45 PM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved Jul 13, 2026, 07:56 PM UTC

    This incident has been resolved.

Read the full incident report →

Major July 10, 2026

Mailgun Control Panel Unavailable For Some Users

Detected by Pingoru
Jul 10, 2026, 06:07 PM UTC
Resolved
Jul 10, 2026, 08:11 PM UTC
Duration
2h 3m
Affected: Control PanelEmail Validation
Timeline · 8 updates
  1. monitoring Jul 10, 2026, 06:07 PM UTC

    A fix has been implemented and we are monitoring the results.

  2. identified Jul 10, 2026, 06:07 PM UTC

    The issue has been identified and a fix is being implemented.

  3. identified Jul 10, 2026, 06:36 PM UTC

    We are continuing to work on a fix for this issue.

  4. identified Jul 10, 2026, 06:59 PM UTC

    We are continuing to work on a fix for this issue.

  5. identified Jul 10, 2026, 07:33 PM UTC

    We are continuing to work on a fix for this issue.

  6. identified Jul 10, 2026, 07:48 PM UTC

    A fix is in the process of being rolled out to impacted regions.

  7. monitoring Jul 10, 2026, 07:58 PM UTC

    A fix has been implemented and we are monitoring the results.

  8. resolved Jul 10, 2026, 08:11 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor June 25, 2026

Inspect previews not rendering

Detected by Pingoru
Jun 25, 2026, 07:21 PM UTC
Resolved
Jun 25, 2026, 08:35 PM UTC
Duration
1h 14m
Affected: Email Previews
Timeline · 5 updates
  1. investigating Jun 25, 2026, 07:21 PM UTC

    We are currently investigating an issue with email previews not working. Outbound processing, inbound processing, logs and webhook delivery are operating normally.

  2. investigating Jun 25, 2026, 08:03 PM UTC

    We are continuing to investigate this issue.

  3. identified Jun 25, 2026, 08:21 PM UTC

    The issue has been identified and a fix is being implemented.

  4. monitoring Jun 25, 2026, 08:24 PM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved Jun 25, 2026, 08:35 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor June 18, 2026

Partial Delay in Event Processing for US Region

Detected by Pingoru
Jun 18, 2026, 08:34 AM UTC
Resolved
Jun 18, 2026, 10:24 AM UTC
Duration
1h 49m
Affected: Events & Logs
Timeline · 5 updates
  1. investigating Jun 18, 2026, 08:34 AM UTC

    Customers using the events/logs APIs or viewing logs in the customer portal may see delays in some events appearing. These delays are only affecting a subset of our customers.

  2. investigating Jun 18, 2026, 09:11 AM UTC

    We are continuing to investigate this issue.

  3. identified Jun 18, 2026, 09:53 AM UTC

    The issue has been identified and a fix is being implemented.

  4. monitoring Jun 18, 2026, 10:11 AM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved Jun 18, 2026, 10:24 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor June 16, 2026

Delayed logs in US region

Detected by Pingoru
Jun 16, 2026, 02:28 PM UTC
Resolved
Jun 16, 2026, 05:34 PM UTC
Duration
3h 6m
Affected: Events & Logs
Timeline · 5 updates
  1. investigating Jun 16, 2026, 02:28 PM UTC

    Logs are currently experiencing delays of 15 minutes in Mailgun's US region. Outbound processing, inbound processing, and webhook delivery are operating normally.

  2. investigating Jun 16, 2026, 03:08 PM UTC

    We are continuing to investigate this issue.

  3. investigating Jun 16, 2026, 03:48 PM UTC

    We are continuing to investigate this issue.

  4. monitoring Jun 16, 2026, 04:16 PM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved Jun 16, 2026, 05:34 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor May 6, 2026

Automatic Sender Security Records Not Provisioning

Detected by Pingoru
May 06, 2026, 03:40 PM UTC
Resolved
May 07, 2026, 06:42 PM UTC
Duration
1d 3h
Affected: Control Panel
Timeline · 4 updates
  1. identified May 06, 2026, 03:40 PM UTC

    Customers creating domains with Automatic Sender Security may have CNAME records with no corresponding TXT records reflecting DKIM keys. A fix for this issue is being prepared.

  2. identified May 06, 2026, 07:46 PM UTC

    We are continuing to work on a fix for this issue.

  3. monitoring May 07, 2026, 12:40 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved May 07, 2026, 06:42 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor April 17, 2026

Elevated Timeouts for Validations

Detected by Pingoru
Apr 17, 2026, 04:45 PM UTC
Resolved
Apr 17, 2026, 05:15 PM UTC
Duration
29m
Affected: Email Validation
Timeline · 4 updates
  1. identified Apr 17, 2026, 04:45 PM UTC

    The issue has been identified and a fix is being implemented.

  2. monitoring Apr 17, 2026, 05:05 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. monitoring Apr 17, 2026, 05:05 PM UTC

    We are continuing to monitor for any further issues.

  4. resolved Apr 17, 2026, 05:15 PM UTC

    This incident has been resolved.

Read the full incident report →

Major April 15, 2026

TLS Certificate Validation Errors for Clients Without SNI

Detected by Pingoru
Apr 15, 2026, 01:40 PM UTC
Resolved
Apr 15, 2026, 03:34 PM UTC
Duration
1h 54m
Affected: API
Timeline · 4 updates
  1. investigating Apr 15, 2026, 01:40 PM UTC

    We are currently investigating an issue where customers making HTTPS requests to our API without Server Name Indication (SNI) enabled are being presented with an expired SSL/TLS certificate. This results in certificate validation failures for affected clients.

  2. identified Apr 15, 2026, 01:42 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Apr 15, 2026, 02:02 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Apr 15, 2026, 03:34 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor April 7, 2026

Elevated 500 errors on Messages endpoint in US

Detected by Pingoru
Apr 07, 2026, 05:30 PM UTC
Resolved
Apr 07, 2026, 05:42 PM UTC
Duration
12m
Affected: API
Timeline · 3 updates
  1. identified Apr 07, 2026, 05:30 PM UTC

    The issue has been identified and a fix is being implemented.

  2. monitoring Apr 07, 2026, 05:32 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Apr 07, 2026, 05:42 PM UTC

    This incident has been resolved. Elevated 500 errors beginning at 17:25 UTC resolved at 17:30 UTC

Read the full incident report →

Major March 19, 2026

Elevated 401 errors in US Region

Detected by Pingoru
Mar 19, 2026, 06:43 PM UTC
Resolved
Mar 19, 2026, 06:53 PM UTC
Duration
10m
Affected: API
Timeline · 2 updates
  1. identified Mar 19, 2026, 06:43 PM UTC

    Some requests may be incorrectly failing with 401 error codes in our US region.

  2. resolved Mar 19, 2026, 06:53 PM UTC

    A fix has been deployed and systems are back to normal.

Read the full incident report →

Major March 13, 2026

Intermittent API Errors in US Region

Detected by Pingoru
Mar 13, 2026, 11:29 AM UTC
Resolved
Mar 13, 2026, 12:49 PM UTC
Duration
1h 20m
Affected: API
Timeline · 5 updates
  1. investigating Mar 13, 2026, 11:29 AM UTC

    We are currently investigating this issue.

  2. investigating Mar 13, 2026, 11:56 AM UTC

    We are continuing to investigate this issue.

  3. identified Mar 13, 2026, 12:19 PM UTC

    The issue has been identified and a fix is being implemented.

  4. monitoring Mar 13, 2026, 12:33 PM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved Mar 13, 2026, 12:49 PM UTC

    The incident has been resolved.

Read the full incident report →

Major February 25, 2026

Intermittent Email Validation Errors

Detected by Pingoru
Feb 25, 2026, 07:10 PM UTC
Resolved
Feb 25, 2026, 09:45 PM UTC
Duration
2h 35m
Affected: APIEmail Validation
Timeline · 8 updates
  1. investigating Feb 25, 2026, 07:10 PM UTC

    We are currently investigating this issue.

  2. investigating Feb 25, 2026, 07:29 PM UTC

    We are continuing to investigate this issue.

  3. identified Feb 25, 2026, 07:29 PM UTC

    Domain verification is also impacted. Increased chances of domain verification failing. The issue has been identified and engineering is actively working on a fix.

  4. identified Feb 25, 2026, 07:30 PM UTC

    We are continuing to work on a fix for this issue.

  5. identified Feb 25, 2026, 07:47 PM UTC

    We are continuing to work on a fix for this issue.

  6. identified Feb 25, 2026, 08:25 PM UTC

    We are continuing to work on a fix for this issue.

  7. monitoring Feb 25, 2026, 09:36 PM UTC

    A fix has been implemented and we are monitoring the results.

  8. resolved Feb 25, 2026, 09:45 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor November 29, 2025

Delayed Logs in EU Region

Detected by Pingoru
Nov 29, 2025, 08:38 AM UTC
Resolved
Nov 29, 2025, 09:56 AM UTC
Duration
1h 17m
Affected: Events & Logs
Timeline · 3 updates
  1. identified Nov 29, 2025, 08:38 AM UTC

    Logs are currently experiencing delays of 15 minutes in Mailgun's EU region. Outbound processing, inbound processing, and webhook delivery are operating normally.

  2. identified Nov 29, 2025, 09:02 AM UTC

    Logs are currently experiencing delays of 20 minutes in Mailgun's EU region. Outbound processing, inbound processing, and webhook delivery are operating normally.

  3. resolved Nov 29, 2025, 09:56 AM UTC

    This incident has been resolved.

Read the full incident report →

Minor November 28, 2025

Delayed Logs in US Region

Detected by Pingoru
Nov 28, 2025, 04:30 PM UTC
Resolved
Nov 28, 2025, 05:56 PM UTC
Duration
1h 26m
Affected: Events & Logs
Timeline · 3 updates
  1. identified Nov 28, 2025, 04:30 PM UTC

    Logs are currently experiencing delays of 15 minutes in Mailgun's US region. Outbound processing, inbound processing, and webhook delivery are operating normally.

  2. monitoring Nov 28, 2025, 05:19 PM UTC

    Events are processing normally, we continue to monitor as we see elevated send volumes.

  3. resolved Nov 28, 2025, 05:56 PM UTC

    Events are processing normally.

Read the full incident report →

Notice November 18, 2025

Elevated inbound recipient rejected

Detected by Pingoru
Nov 18, 2025, 01:31 PM UTC
Resolved
Nov 13, 2025, 10:30 AM UTC
Duration
—
Timeline · 1 update
  1. resolved Nov 18, 2025, 01:31 PM UTC

    On November 13th, Mailgun incorrectly rejected a subset of inbound emails with a 550 "recipient rejected" error. Senders received bounce notifications even though delivery should have succeeded. Affected timeframes: US region: 05:14 to 06:41 UTC and 14:55 to 15:48 UTC EU region: 14:55 to 15:48 UTC Based on our analysis, approximately 25% of US inbound traffic and 50% of EU inbound traffic had a chance to have been impacted during these windows. We're unable to provide exact counts due to gaps in our logging for rejected inbound mail, which we have since corrected.

Read the full incident report →

Minor October 24, 2025

Delayed Message Processing in US

Detected by Pingoru
Oct 24, 2025, 02:14 PM UTC
Resolved
Oct 24, 2025, 03:58 PM UTC
Duration
1h 43m
Affected: Outbound Delivery
Timeline · 4 updates
  1. monitoring Oct 24, 2025, 02:14 PM UTC

    We have identified processing delays for some messages in our US region. A fix has been deployed and we are monitoring the recovery.

  2. monitoring Oct 24, 2025, 02:47 PM UTC

    Queues are being worked through, we continue to monitor resolution.

  3. monitoring Oct 24, 2025, 03:40 PM UTC

    Operations are back to normal and queues are cleared. We'll continue to monitor.

  4. resolved Oct 24, 2025, 03:58 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor October 8, 2025

US Email Ingest Errors

Detected by Pingoru
Oct 08, 2025, 03:00 PM UTC
Resolved
Oct 08, 2025, 01:00 PM UTC
Duration
—
Timeline · 1 update
  1. resolved Oct 08, 2025, 03:00 PM UTC

    Between 12:55 UTC and 13:07 UTC, customers may have experienced email sending failures in the US region. A deployment of new code caused our sending pipeline to temporarily reject some email submissions with HTTP 500 or SMTP 451 errors (~ 2.5% of requests). Our team quickly identified the issue, rolled back the deployment, and restored normal service. Traffic was immediately shifted from the affected US region to the non impacted region to further mitigate customer impact while the rollback took place.

Read the full incident report →

Minor September 30, 2025

Login issues with Mailgun Application

Detected by Pingoru
Sep 30, 2025, 10:57 AM UTC
Resolved
Sep 30, 2025, 12:13 PM UTC
Duration
1h 15m
Affected: Control Panel
Timeline · 5 updates
  1. investigating Sep 30, 2025, 10:57 AM UTC

    We are currently investigating this issue.

  2. identified Sep 30, 2025, 11:15 AM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Sep 30, 2025, 11:46 AM UTC

    A fix has been implemented and we are monitoring the results.

  4. monitoring Sep 30, 2025, 11:46 AM UTC

    We are continuing to monitor for any further issues.

  5. resolved Sep 30, 2025, 12:13 PM UTC

    This incident has been resolved.

Read the full incident report →