Check if Mimecast is down, official outages, user-reported issues, and outages map.
Mimecast is working normally
Check the number of user-reported issues over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem. We only consider an issue widespread if there are multiple reports within a short timeframe.
IsDown has tracked 118 incidents since started monitoring Mimecast status in March 2022. We collect data from 4522+ services, and normalize the data to give you a clear picture of the impact of the outage. It will show official Mimecast outages and also issues that we're started by a spike in crowdsource reports.
| Date | Incident | Duration |
|---|---|---|
|
Oct 20, 2025
06:28 AM EDT
|
Minor
Mimecast is aware of an issue impacting customers who use Mimecast Services integrated with Ama...
|
about 18 hours |
|
Oct 08, 2025
08:39 AM EDT
|
Minor
We are aware that customers may be experiencing issues accessing the Mimecast web portals. We a...
|
about 1 hour |
|
Oct 05, 2025
11:34 PM EDT
|
Minor
We are currently experiencing an intermittent issue with our customer support phone system, where...
|
about 13 hours |
|
Sep 20, 2025
01:32 PM EDT
|
Minor
Mimecast is aware of a service disruption impacting our Mimecast Security Agent (MSA). The agen...
|
about 3 hours |
|
Sep 19, 2025
05:50 PM EDT
|
Minor
We are aware that some customers housed on our US grid may be experiencing intermittent timeout...
|
1 day |
|
Aug 19, 2025
06:16 PM EDT
|
Minor
We are aware that some customers hosted on our US grid may be experiencing a degraded service w...
|
about 2 hours |
|
Aug 19, 2025
10:00 AM EDT
|
Minor
We are aware that customers may be experiencing issues accessing the Administration Console. We...
|
36 minutes |
|
Jul 26, 2025
08:36 PM EDT
|
Minor
We are aware that some customers hosted on our DE grid may be experiencing intermittent delivery ...
|
about 6 hours |
|
Jul 25, 2025
11:18 PM EDT
|
Minor
We are aware that some customers hosted on our DE grid may be experiencing intermittent delivery ...
|
about 1 hour |
|
Jul 25, 2025
03:11 AM EDT
|
Minor
We can confirm that email processing and accessibility to the administration console have been re...
|
about 2 hours |
See what users are saying about Mimecast issues that impacted them and how they are affected by the outage. You can see if other users are experiencing the same issues and if there are any workarounds or solutions.
Tracy - Mails being received but sent mails not going through.
Christo - Airlink (Pty) Ltd Mimecast mail not sending and receiving and we can't log into the Mimecast portal Please advise?.
Pam - We are unable to access Profile Groups in our Mimecast Admin Portal. It appears to be loading then just stops. .
Em - Can’t log in not working .
Eli - Outgoing emails and internal.
Gregg - MS Exchange relay to Mimecast queue is growing..
Amourie - [za-smtp-outbound-1.mimecast.co.za 41.74.193.202: 421 Server busy, please try again later.] Server rejecting all mails.
Roderick - Emails are not sending and receiving..
Conor - SMS service not sending out 2FA texts.
Vasile - 2FA SMS messages not received on a UK mobile number.
Users are monitoring tens of services with IsDown. Here are some that are monitored together with Mimecast. With IsDown you can get a bird's eye view of all your dependencies and how they are performing.
Mimecast is a cloud-based email management service for security, archiving, and continuity, tailored to specific regional compliance and data sovereignty requirements.
Monitoring Mimecast since March 2022
Tracking 9 Mimecast services and regions
38 incidents in 2025
IsDown is a status page aggregator that monitors if Mimecast and all your dependencies are experiencing issues. We combine the status of all the services you dependent and provide a clear view of all your vendors health in one place. We not only monitor official information but also crowdsourced reports. That means that even when Mimecast, per example, doesn't report an outage, you will still be notified if other users are experiencing issues.
Every few minutes we go to the status page of Mimecast (and 4,522+ other services) and check if they are experiencing issues. We collect the status and outage information of Mimecast's 9 components. Also, we not only monitor official sources but also user reports. Sometimes or a lot of times vendors take some time to report an incident, so by monitoring user reports we're able to alert you early.
Not only you will get notified, but IsDown offers notification filters, so you can choose which issues you want to be notified about. This way you avoid getting all the incidents from Mimecast and other services.
IsDown checks Mimecast official status page for major/minor outages or downtimes. A major outage is when Mimecast experiences a critical issue that severely affects one or more services/regions. A minor incident is when Mimecast experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. The moment we detect a Mimecast outage, we send you an alert and update your dashboard and status page.
Mimecast and other vendors don't always report outages on time. IsDown collects user reports to provide early detection of outages. This way, even without an official status update, you can stay ahead of possible problems.
IsDown collects all information from the outages published in Mimecast status page to provide the context of the outage. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.
IsDown monitors Mimecast and all their 9 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.
Our tool was build to be the best way to monitor all your external dependencies in one place. IsDown not only will help you monitor Mimecast but also 4,522 other services. Your team and customers will have a clear view of all your dependencies and their status, making it easier to identify and resolve issues.
Add all your dependencies to your dashboard. IsDown will monitor them in real-time and send you alerts when there is an issue. You can also create a status page for a bird-eye view and share it with your team.
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Not only you will get notified, but IsDown offers notification filters, so you can choose which issues you want to be notified about. This way you avoid getting all the incidents from Mimecast and other services.
Start Monitoring for Free
IsDown integrates with 20+ tools. Connect the status of Mimecast and 4,522 other vendors to your tools to receive vendor outage alerts exactly where your team needs them.
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Create a status page that can easily be access by your team and customers. You can make it public or private, and customize it to your needs. This will be your first line of communication when there's the question 'Is Mimecast down?'
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While Downdetector relies on user-submitted reports to detect Mimecast outages, IsDown monitors Mimecast's status page for verified, detailed incident information. Here's why official monitoring provides better reliability for your business:
| Features |
|
Downdetector |
|---|---|---|
| Official Mimecast status page monitoring with real-time incident details. | ||
| Monitor 4,522+ services including Mimecast in a single dashboard. | ||
| Instant Mimecast outage alerts sent to Slack, Teams, PagerDuty, and more. | ||
| Combined monitoring of Mimecast official status and user-reported issues. | ||
| Maintenance feed for Mimecast | ||
| Granular alerts filtering by Mimecast components and regions. |
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Mimecast isn't down. You can check Mimecast status and incident details on the top of the page. IsDown continuously monitors Mimecast official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Mimecast is currently operational. You can check Mimecast status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.
No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.
Currently there's no report of Mimecast being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Mimecast official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.
Mimecast last outage was on October 20, 2025 with the title "Mimecast issues due to AWS service disruption"
Because IsDown is a status page aggregator, which means that we aggregate the status of multiple cloud services. You can monitor Mimecast and all the services that impact your business. Get a dashboard with the health of all services and status updates. Set up notifications via Slack, Datadog, PagerDuty, and more, when a service you monitor has issues or when maintenances are scheduled.
IsDown and DownDetector help users determine if Mimecast is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information instead of just relying on reports from users. The integration allows us to provide more details about Mimecast's Outages, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.
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