Postmark status updated
Postmark is working normally
Number of user-reported issues for Postmark 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.
See where Postmark users are reporting performance issues or even downtime. The map shows recent reports from around the world.
Postmark Outages MapSee what users are saying about Postmark issues that impacted them and how they are affected by the outage.
Robert - Backend of the site is down for users post-login..
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..
In the last 90 days, Postmark had 3 incidents with a median duration of 140 hours 37 minutes.
Incidents
Major Outages
Minor Incidents
Median Resolution
IsDown has tracked 159 incidents since started monitoring Postmark status in March 2022. We collect data from 5420+ services, and normalize the data to give you a clear picture of the impact of the outage. It will show official Postmark outages and also issues that we're started by a spike in crowdsource reports.
| Title | Started At | Duration |
|---|---|---|
|
Some customers may experience intermittent delays querying recent statistics using our Web UI or ...
|
Dec 01, 2025 at 08:32 PM UTC
|
about 22 hours |
|
We will be performing additional system maintenance on November 26th between 5:00-6:30 PM EST. Th...
|
Nov 26, 2025 at 10:00 PM UTC
|
6 days |
|
We will be performing system maintenance on November 25th between 9:00-10:30 PM EST. The web UI m...
|
Nov 26, 2025 at 02:00 AM UTC
|
7 days |
|
We are experiencing a partial service outage. Email sending is working normally. Engineering is a...
|
Oct 09, 2025 at 06:18 PM UTC
|
34 minutes |
|
On September 18th 2025, between 9:30-10:30pm (Eastern Time), engineers will be performing mainten...
|
Sep 19, 2025 at 01:30 AM UTC
|
about 1 hour |
|
We will be performing planned maintenance from approximately 10:30 PM to 11:30 PM ET today (Septe...
|
Sep 18, 2025 at 02:30 AM UTC
|
1 day |
|
Customers may experience SMTP Authentication issues with API keys generated on or after Saturday,...
|
Sep 10, 2025 at 04:20 PM UTC
|
1 day |
|
Starting on approximately September 8th, some customers experienced intermittent latency and time...
|
Sep 09, 2025 at 02:30 AM UTC
|
about 1 month |
|
Engineering is currently investigating an issue impacting the processing of inbound messages. Cus...
|
Sep 05, 2025 at 11:16 PM UTC
|
13 days |
|
We are experiencing Broadcast email deliverability issues for Microsoft domains such as Outlook a...
|
Aug 29, 2025 at 03:16 PM UTC
|
18 days |
Compare uptime, outage stats, and incident history between Postmark and its alternatives.
IsDown has maintained continuous monitoring of Postmark, a Email Delivery solution, since March 2022. Our database contains 159 documented incidents from the past 4 years, giving us deep insight into Postmark's reliability patterns and typical resolution times. We parse Postmark's official status page across all 4 components, interpreting statuses like operational and incident to deliver precise uptime metrics and targeted notifications.
When Postmark experiences issues, you need accurate information fast. IsDown combines official status page data with user-reported issues, giving you early detection when vendors are slow to acknowledge problems, plus verified incident details once they do. You get affected components, severity levels, and real-time resolution updates from both sources.
Engineering and operations teams rely on IsDown to monitor Postmark and receive verified outage alerts. Get instant notifications through Slack, Teams, PagerDuty, or 20+ other integrations.
Every few minutes we check the status page of Postmark (and 5,420+ other services) for issues. We collect the status and outage information across all 4 Postmark components. We also monitor user reports alongside official sources. Since vendors often take time to report incidents, monitoring user reports helps us alert you early.
Not only will you get notified, but IsDown offers notification filters so you can choose which issues you want to be alerted about. This way you avoid getting all incidents from Postmark and other services, focusing only on those affecting your business.
IsDown checks Postmark official status page for major/minor outages or downtimes. A major outage is when Postmark experiences a critical issue that severely affects one or more services/regions. A minor incident 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. The moment we detect a Postmark outage, we send you an alert and update your dashboard and status page.
Postmark 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 Postmark 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.
Our tool was built to be the best way to monitor all your external dependencies in one place. IsDown not only will help you monitor Postmark but also 5,421 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's-eye view and share it with your team.
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Not only will you 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 incidents from Postmark and other services.
Start Monitoring for Free
IsDown integrates with 20+ tools. Connect the status of Postmark and 5,420 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 accessed 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 Postmark down?'
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Need similar to Downdetector Postmark alerts? IsDown might be the solution for you. While Downdetector relies on user-submitted reports to detect Postmark outages, IsDown monitors Postmark's status page for verified, detailed incident information. Here's why official monitoring provides better reliability for your business:
| Features |
|
Downdetector |
|---|---|---|
| Official Postmark status page monitoring with real-time incident details. | ||
| Monitor 5,420+ services including Postmark in a single dashboard. | ||
| Instant Postmark outage alerts sent to Slack, Teams, PagerDuty, and more. | ||
| Combined monitoring of Postmark official status and user-reported issues. |
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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 December 01, 2025 with the title "Intermittent Statistics 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 Postmark 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 Postmark'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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