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VC Intelligence Report

InboxSDK

Developer Tools — First usable API to write Gmail Apps for 1B active users [Web App, Email, API]
Developer ToolsWeak defense · data moat (weak)est. 2015
● Verified live
Verdict from HTTP liveness real
last probed Aug 28, 2026
Pulse 48.4 · 2/4
48.4
Pulse Index
2/4 families · real
0.0
30-day Δ
pulse momentum · real
17
HTTP probes
liveness history · real
4
Functional tags
observed attributes · real
Risk read derived from observed signals

Verified live by HTTP probe across 17 observations. Pulse has been flat over the last 30 days.

HTTP liveness

real
17 probes · Jun 16, 2026Aug 28, 2026aliveredirecteddeadunverified

Signal telemetry

4 families · 2 observed · observed only
Liveness probereal
alive in 100% of 17 probesavg response 1057 ms
Developer tractionchecked · none
No public repository linked — GitHub signals are not tracked for this product.
Press & sentimentchecked · none
No coverage found in the tracked press corpus. Absence of press is itself a signal at this stage.
Web footprintreal
resolved host
inboxsdk.com
edge
behind Cloudflare
server
cloudflare
Tranco rank
#36,417
Domain age & certificate data not yet collected

Analyst read

generated from the observed metrics above · no external narrative

InboxSDK's listed site resolved live when we last probed it on Aug 28, 2026, so we mark it verified alive. Its Pulse Index is 48.4 of 100, built from 2 of 4 observed signal families. Observed footprint: 4 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
CompanyBasisOverlapPulse30d ΔStatus
HackerNews Profile Widgetdev-toolssimilar100%8.00.0— unverified
Word Simidev-toolssimilar100%0.00.0■ inactive
Ticketmaster APIdev-toolssimilar100%0.0-0.9■ inactive
Featured Walldev-toolssimilar100%8.00.0— unverified
Hide replies APIdev-toolssimilar100%16.00.0→ redirected
Apple Music APIdev-toolssimilar100%8.00.0— unverified
Embed.rocksdev-toolssimilar100%40.00.0● live
Me APIdev-toolssimilar100%40.0+7.2● live

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 attributes
Business modelunknown
Liveness tierquiet
Competitive alternativesnone linked
Open sourceNo
Public APINo
Free tierNo
Enterprise tierNo

Funding & team

not in source

No 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.

RAW TELEMETRY last 14 probes
PROBEDHTTPORIGIN → RESOLVEDSERVERMSVERDICT
2026-08-28 00:17Z200inboxsdk.comcloudflare1306alive
2026-08-19 14:12Z200inboxsdk.comcloudflare1886alive
2026-08-11 00:47Z200inboxsdk.comcloudflare512alive
2026-08-08 06:42Z200inboxsdk.comcloudflare200alive
2026-08-05 19:00Z200inboxsdk.comcloudflare1549alive
2026-07-30 18:15Z200inboxsdk.comcloudflare961alive
2026-07-23 09:37Z200inboxsdk.comcloudflare1118alive
2026-07-17 09:41Z200inboxsdk.comcloudflare2191alive
2026-07-11 09:01Z200inboxsdk.comcloudflare3102alive
2026-07-04 12:58Z200inboxsdk.comcloudflare341alive
2026-06-23 14:07Z200inboxsdk.comcloudflare536alive
2026-06-21 17:11Z200inboxsdk.comcloudflare208alive
2026-06-21 17:11Z200inboxsdk.comcloudflare553alive
2026-06-20 05:01Z200inboxsdk.comcloudflare337alive
Full redirect chains, response headers, and DNS records are not captured by the current probe.
Launch Sentinel tear sheet · InboxSDK · as of 2026-08-28 · launchsentinel.com/reports/inboxsdk · liveness, pulse and press figures are observed data with provenance shown per panel.