SendLetter
The recorded URL now redirects offsite — often an acquisition, rebrand, or wind-down; the destination is recorded in the telemetry below. Pulse has been flat over the last 30 days.
HTTP liveness
realSignal telemetry
4 families · 2 observed · observed onlysendletter.orgedge
behind Cloudflareserver
cloudflareTranco rank
#4,606
Analyst read
generated from the observed metrics above · no external narrativeSendLetter's listed URL redirected off its original domain (to https://sendletter.org/) when we last probed it on Aug 24, 2026 — we mark it redirected, not dead. Its Pulse Index is 25.5 of 100, built from 2 of 4 observed signal families. Observed footprint: 9 functional tags. It has no curated competitive-alternative edges yet, so the comparable set below is functional tag-similarity — read it with the confidence flags.
Comparable set
curated alternatives → functional tag-similarity| Company | Basis | Overlap | Pulse | 30d Δ | Status |
|---|---|---|---|---|---|
| Send NDAfinance | tag-overlap | 78% | 30.4 | +22.4 | ● live |
| Express Invoice Invoicing Softwarefinance | tag-overlap | 78% | 40.0 | 0.0 | ● live |
| Artbeakdesign | tag-overlap | 78% | 0.0 | 0.0 | ■ inactive |
| Near Printerproductivity | similar | 70% | 8.0 | 0.0 | — unverified |
| Adviceservices | tag-overlap | 67% | 48.3 | 0.0 | ● live |
| Eber Taxiecommerce | tag-overlap | 67% | 44.6 | 0.0 | ● live |
| MNDAproductivity | similar | 67% | 8.0 | 0.0 | — unverified |
| Kivo Sendproductivity | similar | 67% | 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.