CheckUpstream measured Postmark at 100.000% availability across 2828 independent checks (global · api). 19 incidents were recorded in the past 12 months; the most recent resolved 7 days ago after 3 hours. Status signals are polled from Postmark's official status feed, alongside independent probes and community reports.
90 days measured availability how this is computed
100.000%
global · api · n=2828 · p95 571ms (30d)
Share of our own checks against Postmark endpoints that returned Postmark's expected response. Evidence that their API edge is answering correctly — not that every product behind it works.
Vendor disclosed: 6 incidents · 86 of 90 days with none posted · 20h 52m of declared impact
Fewer incidents in the last 30 days than 18% of 232 tracked services.
Share of each window with no impact declared by Postmark
7d
100.000%
30d
97.102%
90d
99.034%
180d
99.479%
1y
99.743%
Downtime like this can be refundable
If you're a paying Postmark customer, outages in these windows may count against Postmark's SLA — vendors owe service credits for missed uptime targets, but only if you file inside the deadline. CheckUpstream tracks the entitlement, drafts the claim, and hands you the filing link.
Track your Postmark entitlement →Does Postmark actually matter to you?
A Postmark outage only matters if something you ship depends on it. Point us at a public repository and we will read its dependencies and tell you — no account, nothing stored.
Check a repository →From 6 incidents Postmark published and resolved in the last 90 days, measured between their own start and resolution times. It describes how long Postmark takes to close an incident they have acknowledged — not how often they have them, and not how available they were.
Live Postmark status for your README or docs. Updates itself — no API key, no maintenance.
[](https://checkupstream.com/reliability/postmark)GitHub READMEs, GitLab, MDX docs — links to the live reliability page.
Postmark is currently Operational. CheckUpstream tracks Postmark in real-time across the official status page, RSS / Atom feeds, and community telemetry. Refresh this page for the latest reading.
Postmark's last resolved incident started 7 days ago and lasted 3h 26m (a partial outage).
Looking for the live "is Postmark down" view? See the Postmark Live status page.
Jul 6, 19:51 UTC · resolved in 5h 18m · Resolved
Postmark's 30-day measured availability is 100.000%, from CheckUpstream's own probes against Postmark endpoints. It is the share of checks that returned the expected response, not a figure taken from Postmark's status page.
Sign up to CheckUpstream and add Postmark to a watchlist. We send incident alerts via Slack, email, webhook, or PagerDuty within seconds of detection, covering both the official status page and community signals (HN, Reddit, Bluesky, Cloudflare Radar).
We poll Postmark's official status page on a 1-5 minute cadence, parse its RSS / Atom feed as a fallback, ingest community signals from social platforms, and aggregate per-org SDK telemetry. Multiple sources reduce false positives versus any single feed alone.