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VC Intelligence Report

Spam Mail Tester

Marketing — Free report for improving deliverability of your email [Web App, Tech]
Marketingfreemiumest. 2015
● Verified live
Verdict from HTTP liveness real
last probed Aug 27, 2026
Pulse 48.3 · 2/4
48.3
Pulse Index
2/4 families · real
0.0
30-day Δ
pulse momentum · real
33
HTTP probes
liveness history · real
6
Functional tags
observed attributes · real
Risk read derived from observed signals

Verified live by HTTP probe across 33 observations. Pulse has been flat over the last 30 days.

HTTP liveness

real
33 probes · Jun 16, 2026Aug 27, 2026aliveredirecteddeadunverified

Signal telemetry

4 families · 2 observed · observed only
Liveness probereal
alive in 100% of 33 probesavg response 2115 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
mail-tester.com
edge
behind Cloudflare
server
cloudflare
Tranco rank
#40,375
Domain age & certificate data not yet collected

Analyst read

generated from the observed metrics above · no external narrative

Spam Mail Tester's listed site resolved live when we last probed it on Aug 27, 2026, so we mark it verified alive. Its Pulse Index is 48.3 of 100, built from 2 of 4 observed signal families. Observed footprint: 6 functional tags. It sits on the competitive-alternatives graph with 1 linked rival, so the comparable set below leans on curated edges.

Comparable set

curated alternatives → functional tag-similarity
CompanyBasisOverlapPulse30d ΔStatus
GlockAppsmarketingcurated46.00.0● live
Email Copy Checkermarketingsimilar100%0.00.0■ inactive
MegaIndex Backlinksmarketingsimilar100%5.20.0■ inactive
Use Best free SMTP Servermarketingsimilar100%0.00.0■ inactive
BizHub Newsletter-Marketing en Españolcommunicationtag-overlap100%40.00.0● live
SerpMaze.commarketingsimilar100%8.00.0— unverified
Free onsite SEO analysis V1marketingsimilar100%40.00.0● live
SmartBribemarketingsimilar100%16.00.0→ redirected

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 modelfreemium
Liveness tierquiet
Competitive alternatives1
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
2026-08-27 18:04Z200mail-tester.comcloudflare2211alive
2026-08-26 09:36Z200mail-tester.comcloudflare2452alive
2026-08-19 13:58Z200mail-tester.comcloudflare1857alive
2026-08-11 00:33Z200mail-tester.comcloudflare2711alive
2026-08-08 06:26Z200mail-tester.comcloudflare3697alive
2026-08-05 18:45Z200mail-tester.comcloudflare2928alive
2026-07-30 18:00Z200mail-tester.comcloudflare2129alive
2026-07-23 09:20Z200mail-tester.comcloudflare1902alive
2026-07-22 09:23Z200mail-tester.comcloudflare1753alive
2026-07-21 09:24Z200mail-tester.comcloudflare1768alive
2026-07-20 09:51Z200mail-tester.comcloudflare2074alive
2026-07-19 09:03Z200mail-tester.comcloudflare1700alive
2026-07-18 08:44Z200mail-tester.comcloudflare1094alive
2026-07-17 09:05Z200mail-tester.comcloudflare1334alive
Full redirect chains, response headers, and DNS records are not captured by the current probe.
Launch Sentinel tear sheet · Spam Mail Tester · as of 2026-08-28 · launchsentinel.com/reports/spam-mail-tester · liveness, pulse and press figures are observed data with provenance shown per panel.