Postmark
Verified live by HTTP probe across 41 observations. Pulse has been flat over the last 30 days.
HTTP liveness
realSignal telemetry
4 families · 2 observed · observed onlypostmarkapp.comedge
behind Cloudflareserver
cloudflareTranco rank
#24,124
Analyst read
generated from the observed metrics above · no external narrativePostmark's listed site resolved live when we last probed it on Aug 27, 2026, so we mark it verified alive. Its Pulse Index is 48.8 of 100, built from 2 of 4 observed signal families. Observed footprint: 11 functional tags. It sits on the competitive-alternatives graph with 2 linked rivals, so the comparable set below leans on curated edges.
Comparable set
curated alternatives → functional tag-similarity| Company | Basis | Overlap | Pulse | 30d Δ | Status |
|---|---|---|---|---|---|
| Mailgundev-tools | curated | — | 48.8 | 0.0 | ● live |
| Stitch Webhooksanalytics | tag-overlap | 83% | 47.1 | 0.0 | ● live |
| TaskRouter by Twiliodev-tools | tag-overlap | 83% | 40.0 | 0.0 | ● live |
| Optimizely X Full Stackdev-tools | tag-overlap | 82% | 40.0 | 0.0 | ● live |
| Web Push Notification Service Packagecommunication | tag-overlap | 82% | 40.7 | 0.0 | ● live |
| Openshipecommerce | tag-overlap | 82% | 40.0 | 0.0 | ● live |
| Timeriseecommerce | tag-overlap | 82% | 16.0 | 0.0 | → redirected |
| Kudo Koalaecommerce | tag-overlap | 82% | 8.0 | 0.0 | — unverified |
Confidence reflects source and category coherence: curated = an editorially linked alternative; similar = strong functional tag-overlap in the same category; tag-overlap = shared tags only and may be noisy. Overlap is the shared functional-tag ratio (Jaccard) for tag-matched rows. Pulse is the observed-activity index real and 30d Δ its signed month change; a dash means insufficient observed history, never zero.
Structure
observed attributesFunding & team
not in sourceNo disclosed funding in our sources. Funding data covers only ~1% of the corpus (462 rounds across 79K products), so absence here is unknown, not zero— we don't estimate a number we can't source.