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PromoTab
PromoTab validates email deliverability by checking whether your messages land in Gmail's Primary inbox, Promotions tab, or Spam folder using real Gmail accounts
last checked Jul 13, 2026 · HTTP 403
CohortClass of 2026What it is
PromoTab validates email deliverability by checking whether your messages land in Gmail's Primary inbox, Promotions tab, or Spam folder using real Gmail accounts. Essential for email marketers and newsletter creators to optimize inbox placement and improve engagement rates.
HTTP liveness
12 probes since May 23May 23Jul 13
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jul 13, 2026Probe inconclusiveCloudflare block
- Jun 21, 2026Back onlineAlive · 200 OK
- Jun 20, 2026Probe inconclusiveCloudflare block
- Jun 16, 2026Back onlineAlive · 200 OK
- Jun 12, 2026Probe inconclusiveCloudflare block
- May 23, 2026First probe — liveAlive · 200 OK
Moat
Data moat
moderate
Accumulates proprietary data on email deliverability to improve the product over time.
moderate · 0.80 confidence
Text classification · Jun 2026
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Pulse Indexobserved activity
12 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