Mailgun Outage History

Mailgun is up right now

Pingoru has recorded 53 incidents for Mailgun: 32 in the last 12 months and 9 in the last 90 days.

Source: status.mailgun.com

53incidents recorded
32last 12 months
9last 90 days
3 hourstypical duration
Incidents per month
036AprMayJunJulAugSepOct0
Share of hours with an open incident, any severity
0%50%100%AprMayJunJulAugSepOct0%
Pingoru began tracking Mailgun in April 2026, so earlier months are not shown. Hover a bar for its value.
Show as a table
MonthIncidentsHours with an open incident
April 202633 of 720 (0%)
May 2026231 of 744 (4%)
June 2026617 of 720 (2%)
July 202635 of 744 (1%)
August 2026511 of 744 (1%)
September 202643 of 720 (0%)
October 202600 of 523 (0%)

Incidents, newest first

Minor September 30, 2026 Route delays in EU Region 42m Inbound email processing

Started Sep 30, 2026, 09:16 AM UTC· resolved Sep 30, 2026, 09:58 AM UTC

  1. investigating Sep 30, 2026, 09:16 AM UTC

    We are currently investigating this issue.

  2. identified Sep 30, 2026, 09:38 AM UTC

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

  3. monitoring Sep 30, 2026, 09:48 AM UTC

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

  4. resolved Sep 30, 2026, 09:58 AM UTC

    This incident has been resolved.

Read the full incident report →

Critical September 4, 2026 EU Messaging Outage 17m API, SMTP, Outbound Delivery, Inbound email processing and 2 more

Started Sep 04, 2026, 02:16 PM UTC· resolved Sep 04, 2026, 02:33 PM UTC

  1. investigating Sep 04, 2026, 02:16 PM UTC

    We are currently investigating this issue.

  2. monitoring Sep 04, 2026, 02:21 PM UTC

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

  3. resolved Sep 04, 2026, 02:33 PM UTC

    This incident has been resolved.

Read the full incident report →

Notice September 4, 2026 Microsoft Incident Resulting in Delivery Issues to M365 34m

Started Sep 04, 2026, 12:20 PM UTC· resolved Sep 04, 2026, 12:54 PM UTC

  1. monitoring Sep 04, 2026, 12:20 PM UTC

    Starting around 08:00 UTC, Microsoft began experiencing an incident causing an increased volume of deferred emails across all M365 regions. The affected responses are returning "451 4.7.500 Server busy". Our teams are actively monitoring the situation. No other email providers are currently affected.

  2. monitoring Sep 04, 2026, 12:22 PM UTC

    We are continuing to monitor for any further issues.

  3. resolved Sep 04, 2026, 12:54 PM UTC

    Microsoft has resolved the underlying issue, we are seeing deliveries to M365 process normally.

Read the full incident report →

Minor August 31, 2026 Event Log Delays in US Region 7h 14m Events & Logs

Started Aug 31, 2026, 02:47 PM UTC· resolved Aug 31, 2026, 10:01 PM UTC

  1. identified Aug 31, 2026, 02:47 PM UTC

    We are currently experiencing delays in event log processing in our US region.

  2. identified Aug 31, 2026, 03:29 PM UTC

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

  3. identified Aug 31, 2026, 04:24 PM UTC

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

  4. identified Aug 31, 2026, 05:05 PM UTC

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

  5. identified Aug 31, 2026, 05:56 PM UTC

    We are putting a fix in place for this issue. There is significant backlogs of event logs to process. We update the expected time of resolution when available.

  6. identified Aug 31, 2026, 06:59 PM UTC

    The delays in event processing are reducing. We expect all delays to be resolved in the next 3 hours.

  7. identified Aug 31, 2026, 07:38 PM UTC

    The event processing backlog is steadily decreasing, and we’re continuing to monitor the recovery.

  8. identified Aug 31, 2026, 08:13 PM UTC

    The event processing backlog is steadily decreasing, and we’re continuing to monitor the recovery. We expect all delays to be resolved in the next 2 hours.

  9. identified Aug 31, 2026, 08:43 PM UTC

    The event processing backlog is steadily decreasing, and we’re continuing to monitor the recovery.

  10. identified Aug 31, 2026, 09:28 PM UTC

    The event processing backlog is steadily decreasing, and we’re continuing to monitor the recovery. We expect all delays to be resolved within the hour.

  11. resolved Aug 31, 2026, 10:01 PM UTC

    Event queues have caught up and events are processing normally.

Read the full incident report →

Minor August 20, 2026 GCP Reporting Multi Service Outage in US-West1 1h 12m Outbound Delivery, Events & Logs

Started Aug 20, 2026, 04:19 PM UTC· resolved Aug 20, 2026, 05:31 PM UTC

  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 – Outbound Delivery

Started Aug 17, 2026, 08:18 PM UTC· resolved Aug 17, 2026, 08:18 PM UTC

  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) 1h 35m Events & Logs

Started Aug 11, 2026, 05:32 AM UTC· resolved Aug 11, 2026, 07:07 AM UTC

  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 →

Critical July 13, 2026 US Email Validation 500's and Mailgun Control Panel Unavailable 1h 32m Control Panel, Email Validation

Started Jul 13, 2026, 06:23 PM UTC· resolved Jul 13, 2026, 07:56 PM UTC

  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 2h 3m Control Panel, Email Validation

Started Jul 10, 2026, 06:07 PM UTC· resolved Jul 10, 2026, 08:11 PM UTC

  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 1h 14m Email Previews

Started Jun 25, 2026, 07:21 PM UTC· resolved Jun 25, 2026, 08:35 PM UTC

  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 23, 2026 Log retrieval errors in the US region 6h 55m Events & Logs

Started Jun 23, 2026, 09:14 AM UTC· resolved Jun 23, 2026, 04:09 PM UTC

  1. investigating Jun 23, 2026, 09:14 AM UTC

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

  2. identified Jun 23, 2026, 09:30 AM UTC

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

  3. identified Jun 23, 2026, 10:04 AM UTC

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

  4. identified Jun 23, 2026, 10:41 AM UTC

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

  5. identified Jun 23, 2026, 11:19 AM UTC

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

  6. identified Jun 23, 2026, 12:07 PM UTC

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

  7. identified Jun 23, 2026, 01:10 PM UTC

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

  8. identified Jun 23, 2026, 02:13 PM UTC

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

  9. identified Jun 23, 2026, 02:52 PM UTC

    We are continuing to work on a fix for this issue. Some customers may see log delays. Outbound processing, inbound processing, and webhook delivery are operating normally.

  10. identified Jun 23, 2026, 03:25 PM UTC

    We are continuing to work on a fix for this issue. Some customers may see log delays. Outbound processing, inbound processing, and webhook delivery continue operating normally.

  11. monitoring Jun 23, 2026, 03:56 PM UTC

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

  12. resolved Jun 23, 2026, 04:09 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor June 18, 2026 Partial Delay in Event Processing for US Region 1h 49m Events & Logs

Started Jun 18, 2026, 08:34 AM UTC· resolved Jun 18, 2026, 10:24 AM UTC

  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 3h 6m Events & Logs

Started Jun 16, 2026, 02:28 PM UTC· resolved Jun 16, 2026, 05:34 PM UTC

  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 →

Critical May 25, 2026 Delayed sending in EU 3h 36m API, Outbound Delivery

Started May 25, 2026, 12:18 PM UTC· resolved May 25, 2026, 03:55 PM UTC

  1. investigating May 25, 2026, 12:18 PM UTC

    We are currently investigating this issue.

  2. investigating May 25, 2026, 12:48 PM UTC

    We are continuing to investigate this issue.

  3. investigating May 25, 2026, 12:59 PM UTC

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

  4. monitoring May 25, 2026, 01:00 PM UTC

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

  5. investigating May 25, 2026, 01:38 PM UTC

    We are currently investigating this issue.

  6. investigating May 25, 2026, 02:10 PM UTC

    We are continuing to investigate this issue.

  7. identified May 25, 2026, 02:46 PM UTC

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

  8. identified May 25, 2026, 03:35 PM UTC

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

  9. monitoring May 25, 2026, 03:45 PM UTC

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

  10. resolved May 25, 2026, 03:55 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor May 6, 2026 Automatic Sender Security Records Not Provisioning 1d 3h Control Panel

Started May 06, 2026, 03:40 PM UTC· resolved May 07, 2026, 06:42 PM UTC

  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 29m Email Validation

Started Apr 17, 2026, 04:45 PM UTC· resolved Apr 17, 2026, 05:15 PM UTC

  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 1h 54m API

Started Apr 15, 2026, 01:40 PM UTC· resolved Apr 15, 2026, 03:34 PM UTC

  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 12m API

Started Apr 07, 2026, 05:30 PM UTC· resolved Apr 07, 2026, 05:42 PM UTC

  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 10m API

Started Mar 19, 2026, 06:43 PM UTC· resolved Mar 19, 2026, 06:53 PM UTC

  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 1h 20m API

Started Mar 13, 2026, 11:29 AM UTC· resolved Mar 13, 2026, 12:49 PM UTC

  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 2h 35m API, Email Validation

Started Feb 25, 2026, 07:10 PM UTC· resolved Feb 25, 2026, 09:45 PM UTC

  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 1h 17m Events & Logs

Started Nov 29, 2025, 08:38 AM UTC· resolved Nov 29, 2025, 09:56 AM UTC

  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 1h 26m Events & Logs

Started Nov 28, 2025, 04:30 PM UTC· resolved Nov 28, 2025, 05:56 PM UTC

  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 13, 2025 Elevated inbound recipient rejected 10h 34m

Started Nov 13, 2025, 05:14 AM UTC· resolved Nov 13, 2025, 03:48 PM UTC

  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 1h 43m Outbound Delivery

Started Oct 24, 2025, 02:14 PM UTC· resolved Oct 24, 2025, 03:58 PM UTC

  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 →