Is Postmark down in the UK?
Checks passingin the UK, measured from London
Our London probe last checked Postmark at Nov 5, 2026, 4:19 PM UTC and read checks passing.
Over the last 24 hours we completed 24 checks from London and 24 answered cleanly, 100.00% availability.
Of the 9 other regions we check Postmark from, all 9 read checks passing right now.
Email me the next time we see Postmark go down
What our London probe measured
Last checked Nov 5, 2026, 4:19 PM UTC.
Postmark from London over the last 30 days
Over the last 30 days, Postmark answered our London probe in 657 ms on average, and 1 check in 20 took longer than 1,032 ms.
Ranked by average response time across the 10 cities we check Postmark from, London 2nd; Toronto was fastest at 619 ms and Sydney slowest at 1,861 ms.
From London we ran 711 checks of Postmark in 30 days, and 710 answered cleanly: 99.85% availability.
1 of the 30 days had at least one failed check. The weakest was Nov 1 (UTC), at 95.83% across 24 checks.
In London local time (GMT), Postmark was slowest around 8 PM, at 1,134 ms on average over the last 14 days, and quickest around 9 PM, at 636 ms.
| Day (UTC) | Checks | Availability | Average response |
|---|---|---|---|
| Thu, Nov 5 | 16 | 100.00% | 646 ms |
| Wed, Nov 4 | 24 | 100.00% | 726 ms |
| Tue, Nov 3 | 24 | 100.00% | 664 ms |
| Mon, Nov 2 | 24 | 100.00% | 794 ms |
| Sun, Nov 1 | 24 | 95.83% | 756 ms |
| Sat, Oct 31 | 24 | 100.00% | 695 ms |
| Fri, Oct 30 | 24 | 100.00% | 691 ms |
| Thu, Oct 29 | 24 | 100.00% | 663 ms |
| Wed, Oct 28 | 24 | 100.00% | 664 ms |
| Tue, Oct 27 | 24 | 100.00% | 727 ms |
| Mon, Oct 26 | 24 | 100.00% | 691 ms |
| Sun, Oct 25 | 24 | 100.00% | 675 ms |
| Sat, Oct 24 | 24 | 100.00% | 688 ms |
| Fri, Oct 23 | 24 | 100.00% | 680 ms |
Postmark outages measured from the UK
Our London probe measured no confirmed Postmark outage in the last 90 days.
How the other regions read right now
Of the 9 other regions we check Postmark from, all 9 read checks passing right now.
| Probe city | Right now | Last 24h |
|---|---|---|
| Ashburn | Checks passing | 100.00% of 47 checks |
| San Jose | Checks passing | 100.00% of 38 checks |
| Frankfurt | Checks passing | 100.00% of 33 checks |
| Tokyo | Checks passing | 100.00% of 20 checks |
| Chicago | Checks passing | 95.65% of 23 checks |
| Toronto | Checks passing | 100.00% of 24 checks |
| Singapore | Checks passing | 100.00% of 24 checks |
| Sydney | Checks passing | 100.00% of 24 checks |
| São Paulo | Checks passing | 100.00% of 24 checks |
Other countries we check Postmark from
How we measured this
The UK readings on this page come from RealUptime's own London probe against Postmark's public endpoints. They are not user reports, and they are not Postmark's own status page.
See Postmark's full check readings, the 90-day history by region, or the outage tracker methodology.
Check your own site from London
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