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CampaignKit
CampaignKit is an email list cleaning service that identifies invalid and malicious email addresses in your campaigns without premium pricing
verified Jul 14, 2026 · HTTP 200
CohortClass of 2026What it is
CampaignKit is an email list cleaning service that identifies invalid and malicious email addresses in your campaigns without premium pricing. The platform helps maintain list quality and deliverability by filtering out problematic addresses before sending.
HTTP liveness
10 probes since Jun 16Jun 16Jul 14
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — liveAlive · 200 OK
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Pulse Indexobserved activity
10 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y