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10 things every startuper must know about e-mail marketing.
What I've learnt from e-mail campaigns with 1
verified Jul 14, 2026 · HTTP 200
CohortClass of 2016What it is
What I've learnt from e-mail campaigns with 1.4M recepients [Email Marketing, Marketing, Books]
HTTP liveness
11 probes since Jun 16Jun 16Jul 14
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 18, 2026Back onlineAlive · 200 OK
- Jun 17, 2026Went darkDead · 404
- Jun 16, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
11 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2016weekly
13,657 products launched in 2016 · 100% still active
13,633 active24 sunset
Still active
100%
Median lifespan
4.9y