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Folderly Lens
Folderly Lens is a tool designed to help email marketers identify and fix issues with their domain health, ensuring high-performance email campaigns
verified Jul 4, 2026 · HTTP 200
CohortClass of 2026What it is
Folderly Lens is a tool designed to help email marketers identify and fix issues with their domain health, ensuring high-performance email campaigns. It provides a quick and easy way to analyze public DNS, authentication, MX, IP rDNS, and blacklist signals. The tool is suitable for marketers and businesses looking to improve their email deliverability.
HTTP liveness
2 probes since Jul 3Jul 3Jul 4
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 3, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
2 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
508 products launched in 2026 · 100% still active
508 active0 sunset
Still active
100%
Median lifespan
4.9y