CheckUpstream has measured Postmark at 100.000% uptime over the last 90 days and 99.981% over the last 12 months. 13 incidents were recorded in the past 12 months; the most recent resolved 20 days ago after 5 hours. Status signals are polled from Postmark's official status feed, alongside independent probes and community reports.
180 days uptime
99.962%
179 of 180 days clean · 1h 39m total downtime
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 →Live status pill for Postmark. Updates automatically — no maintenance, no API key.
PREVIEW
Drop into any HTML page — README, docs, vendor homepage. No iframe, no dependencies.
<script src="https://checkupstream.com/embed/badge.js?service=postmark"></script>Self-contained, CSP-friendly. Theme + size are query params; revalidates every 60s.
<iframe src="https://checkupstream.com/embed/postmark" style="border:0;width:260px;height:44px" loading="lazy" title="Postmark status badge"></iframe>GitHub READMEs, GitLab, MDX docs — links to the live reliability page.
[](https://checkupstream.com/reliability/postmark)Useful for status-page composers (Notion, Slab, custom dashboards) that accept image URLs.
https://checkupstream.com/embed/postmark/badge.svgPostmark 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 20 days ago and lasted 5h 18m (a partial outage).
Looking for the live "is Postmark down" view? See the Postmark Status page.
Jun 1, 16:17 UTC · resolved in 8h 12m · Identified
Postmark's 30-day customer-perceived uptime is 99.962%. The figure is weighted (full-outage = 1.0, degraded = 0.3) so component blips don't collapse the score the way a raw incident-count would.
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.