Check if Postmark is down, recent outages, user-reported issues, and outages map.
Postmark is working normally
Last checked from Postmark's status page
This chart displays 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 149 incidents since started monitoring Postmark status in March 2022. We collect data from 4400+ services, and normalize the data to give you a clear picture of the impact of the outage.
17 days ago · lasted 26 minutes
Some emails are showing in a processed state for extended periods of time. This is not affecting all emails. The majority of emails are still being processed.
4 months ago · lasted 12 minutes
We are experiencing Intermittent delays for API and SMTP email sending. Engineering teams are actively working to resolve the issue.
4 months ago · lasted 1 day
We are receiving reports that some customers in the UK region are experiencing link tracking issues. The engineering team is actively investigating.
We've tracked and collected 149 incidents since started monitoring Postmark status
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JD
E-mails not being received by customers.
koen
our mails send by postmark does not arrive in any microsoft mailbox (hotmail, live, ...)
Zac
Unable to access site, seems they're having an SSL issue.
Name
Emails marked as "delivered" but not being received
Elise
Emails from TimeToPet are NOT coming through, it's been three hours!!
Andrii
The messages are being queued
Boris
Long time queued emails.. Not sent..
Antonio
SSL certificate is expired: openssl s_client -starttls smtp -connect smtp.postmarkapp.com:587
Simon
smtp.postmarkapp.com SSL Certificate expired.
Peter
TLS cert expired for outgoing SMTP
Dinesh
Error sending emails using smtp. *.postmarkapp.com has expired
Sudharshan
Lot of our messages in queued status
Katie
I cannot open a link that uses Postmark
Noah
Emails not being delivered
Nathan
29k emails queued since 9:30
Stay Ahead of Postmark Outages
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Services commonly monitored together with Postmark
Postmark isn't down. You can check Postmark status and incident details on the top of the page. IsDown continuously monitors Postmark official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Postmark is currently operational. You can check Postmark 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 Postmark being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Postmark 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.
Postmark last outage was on August 01, 2025 with the title "Intermittent Processing Delays"
Because IsDown is a status page aggregator, which means that we aggregate the status of multiple cloud services. You can monitor Postmark 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 a service 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. The integration allows us to provide more details about the outage, 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.
IsDown offers an easy way to monitor Postmark with maximum flexibility
IsDown monitors Postmark for major outages. A major outage is when Postmark experiences a critical issue that severely affects one or more services/regions. When Postmark marks an incident as a major outage, IsDown updates its internal status, the customer status page and dashboard. Depending on the customer settings, IsDown will also send notifications.
IsDown monitors Postmark status page for minor outages. A minor outage is when Postmark experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. When a minor outage occurs, IsDown updates its internal status and shares that information on the customer status page. Depending on the customer settings, IsDown will also send notifications.
IsDown collects all information from the outages published in Postmark status page to provide the most accurate information. 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.
Postmark and other vendors don’t always report outages on time. Our crowdsourced status platform helps you stay ahead of outages. Users report issues and outages, sharing details on what problems they are facing. We use that info to provide early signs of outages. This way, even without an official update, you can stay ahead of possible problems.
Very happy with isDown. Setting up and managing the monitoring is straightforward. The customer support team has been excellent, always quick to answer questions and provide assistance.
I definitely recommend IsDown.
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