Stack Health Score
Score = 30-day uptime − penaltiesLatency >500ms: −2 | >1000ms: −5
Outages this month: −2 each
Degradations this month: −1 each
Uptime · Latency · Incidents
Get an email when Postmark API's status changes.
Free — a minute to set up, checked from 4 regions around the clock.
How many of your clients depend on Postmark API?
When Postmark API slows down, every project that depends on it feels it at once — and the first call goes to whoever shipped it. Probecast watches the sites you ship and the providers underneath them, shows which clients an outage touches and turns each month into a report your client can trust.
One provider breaks. See every client it touches.
Ordered by how many clients it hits, so you message the right people first.
Each client's site and store, checked from four regions.
US West & East, Europe and Asia — a regional outage never hides.
A monthly report under your brand, reviewed by your team before it goes out.
Uptime, incidents, traffic, revenue and support — signed off by a person.
Your team scoped per client. Every change on the record.
Freelancers see only their clients; every change lands in an append-only audit log.
Alerts land on email, Slack, push or webhooks — with the client's name on them.
99.99%
UptimePercentage of time the API was available.
Only DOWN status impacts this metric.
361ms
Avg Latency
1,000+
APIs monitored
0
Outages
0
Degradations
This Month
About Postmark's Postmark API
Postmark's Postmark API delivers transactional emails with high deliverability and detailed open and click tracking. Postmark was founded in 2009 and focuses exclusively on fast transactional email delivery.. The Postmark API is used by developers worldwide for transactional email, delivery tracking, open rate monitoring, bounce management, email templates.
Probecast monitors the Postmark API from 4 global regions (US West, US East, Europe, Asia Pacific) every 5 minutes, tracking uptime, latency and regional availability. Our real-time monitoring helps developers and teams understand the current health of Postmark's Postmark API and get alerted the moment service degrades.
Why monitor Postmark API?
If your product depends on Postmark API for critical features, an outage on Postmark's side is an outage on your product. Probecast detects Postmark API incidents as they start, giving you time to communicate with customers, fall back to alternative services or pause background jobs gracefully.
Current status
As of the latest check, Postmark API is operational. The 30-day uptime is 99.99%, with 0 incidents recorded this month. Average response latency across all regions is 361ms.
●Uptime History
Regional Status
US West
183ms
latency
US East
183ms
latency
Europe
299ms
latency
Asia Pacific
779ms
latency
Latency (24h)
More Email APIs
full catalog →Live status · same monitoring as Postmark API
Frequently Asked Questions
Recent Incidents
No incidents recorded
This API has been stable
API Information
Monitored Endpoint
https://api.postmarkapp.com/server