Looking for an update now? Check the current status, or follow Mimecast for future changes.
Building verified history21 of 24 verified daily observations collected. A percentage will appear after the minimum coverage threshold is met.
90-Day Trend
Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.
Recorded Daily Status (Last 54 Days)
Jul 23Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data
Incident History
No source-attested incident records are available for the current collector history. Older legacy archive records remain available below.
Legacy Incident Archive
27 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.
July 2026
Australia Region: Email processing delays
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We can confirm that email processing services in the Australia region have been restored. We will continue to closely monitor performance but email services should now be functioning normally.
monitoring
We are aware that customers in Australia region may be experiencing email delivery delays. We are currently investigating the issue and updates will be posted here as they become available.
investigating
We are aware that customers in Australia region may be experiencing email delivery delays. We are currently investigating the issue and updates will be posted here as they become available.
June 2026
SMS delivery delays
minorSource not attested
Last archived state: investigating
View archived record details
investigating
Our third-party SMS provider has confirmed that the service incident impacting the delivery of Two-Factor Authentication (2FA) SMS messages has been resolved. All SMS messages are now being delivered successfully.
We will continue to monitor the situation to ensure system stability and consistent message delivery.
monitoring
Our third-party SMS provider has reported an issue that may impact the successful delivery of SMS messages used for Two-Factor Authentication (2FA). The provider is actively working on a resolution, and we will provide updates as they become available.
SMS delivery delays
minorSource not attested
Last archived state: investigating
View archived record details
investigating
Our third-party SMS provider has resolved their incident and confirmed full service restoration. SMS delivery, including 2FA codes, should now be back to normal. Any messages delayed during the incident window have been processed.
We are monitoring to confirm full recovery on our end and will close this incident within 60 minutes if no further issues are observed.
monitoring
We have identified the root cause of the SMS delivery issue currently affecting some Mimecast customers. Our third-party SMS provider has confirmed the root cause and their engineering team is actively working on a solution.
SMS messages processed during the incident window may experience delays and will be reprocessed once services are fully restored.
Impact: SMS message delivery to recipients may be delayed or unsuccessful, including 2FA authentication codes sent via SMS.
Services affe...
monitoring
We are currently investigating an issue affecting the delivery of SMS messages to recipients. Some customers may experience delays or failures when Mimecast attempts to deliver SMS notifications.
We have identified a potential issue with one of our third-party SMS delivery provider and are actively working with them to determine the root cause and restore full service.
Impact: SMS message delivery to recipients may be delayed or unsuccessful.
Services affected: SMS notifications and aler...
Degraded service impacting Partner Administration Console access
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have taken mitigation steps and believe we have resolved the issue impacting access to the Administration Console via the Partner Portal globally.
All services should now be functioning normally. Our Engineering team will continue to closely monitor application availability and performance. We will provide further updates here if necessary.
monitoring
We are continuing to investigate the service disruption impacting Partner Administrators. Administrators are able to successfully log into the Partner Portal; however, when attempting to access customer Administration Consoles via the Partner Portal, they are being logged out.
Our engineering teams remain actively engaged in the investigation. Further updates will be posted here as they become available.
monitoring
We are aware that some Partner Administrators may be experiencing a login loop when attempting to access the Administration Console. We are currently investigating this issue and will post further updates here as they become available.
Administration console access issue
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have implemented mitigation steps and believe we have resolved the intermittent issues affecting access to the Mimecast Administration Console for customers hosted on our UK, DE, and ZA grids. Our Engineering team is closely monitoring the situation to ensure a full resolution.
monitoring
We have identified the cause of the intermittent issues affecting customers hosted on our UK, DE, and ZA grids experiencing difficulty accessing the Mimecast Administration Console. Our Engineering team is actively working on implementing a fix and we will provide further updates as they become available.
monitoring
We are aware that some customers hosted on our UK, DE and ZA grid may be experiencing intermittent issues accessing the Mimecast Administration Console. Our Engineering team is actively investigating the issue and we will provide further updates as they become available.
Email Delivery Delays | ZA Grid
minorSource not attested
Last archived state: investigating
View archived record details
investigating
The email delivery delays affecting customers in ZA have been resolved. We are monitoring to ensure full stability. Further updates will be posted here as they become available.
monitoring
We have identified the cause of the email delivery delays affecting customers in ZA. Engineering are working to resolve this. Further updates will be posted here as they become available.
monitoring
We are aware that customers in ZA grid may be experiencing email delivery delays. We are currently investigating the issue and updates will be posted here as they become available.
Email delivery delays on US grid
minorSource not attested
Last archived state: monitoring
View archived record details
monitoring
We have resolved the email delivery issue affecting Office 365 tenants for US-hosted customers. Mitigation efforts are ongoing for UK and ZA hosted customers, and we will provide further updates as work continues.
monitoring
We have identified the issue impacting email delivery to Office 365 tenants for a subset of US hosted customers and are working to resolve it. We will provide further updates as they become available.
monitoring
We are aware of a service disruption that is impacting email delivery to Office 365 tenants for a subset of US hosted customers. We are investigating this issue and will post further updates here.
Degraded performance on US grid
minorSource not attested
Last archived state: monitoring
View archived record details
monitoring
We have taken mitigation steps and continue to see improved services for previously impacted customers hosted on our US grid. We are continuing our resolution and further updates will be posted here.
monitoring
We believe we have identified the issue affecting a small subset of US-hosted customers and are working to resolve it. We will provide further updates as they become available.
monitoring
We are aware that a small subset of customers hosted on our US grid may be experiencing a degraded service. We are currently investigating the issue and updates will be posted here as they become available.
Degraded Service – Partner Portal Access
Source not attested
Last archived state: monitoring
View archived record details
monitoring
We are aware of a service disruption impacting access to the Partner Portal for some customers. Users may be unable to log in or may experience errors when attempting to access the portal.
We are currently investigating the issue and will post further updates here as they become available.
May 2026
German (DE) Mail Processing Degraded
minorSource not attested
Last archived state: investigating
View archived record details
investigating
We have taken mitigation steps and believe impact to the service has been addressed. While recovery continues, some small mail flow delays may persist as the backlog clears.
Our Engineering team is closely monitoring performance and investigating the cause of the high load. Further updates will be provided as needed.
monitoring
We are aware that some customers hosted on the German (DE) grid may be experiencing degraded service affecting email processing. We are currently investigating the issue, and updates will be posted here as they become available.
