Being in some warmup pools silently hurts your deliverability.

Trusting your warmup score by itself is a mistake. Only a 3rd party can prove if you're at risk.

A sequencer can't independently verify its own pool quality. We can. Warm.ac is the 3rd party: public, free, live.

6+ million domains

Warmup ≠ warming

Deliverability problems you could not explain, until now. 3rd party analysis of 4 sequencers' warmup.

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Industry composition Your composition

You don't choose your pool

Your sequencer decides which inbox pool you land in.

You can't see if it's good

Healthy pool or harmful, you're never told.

Only an outsider can

A neutral test with no stake shows the real picture.

Public Data

Industry average

Aggregated samples across millions of domains. A close estimate, not your exact pool.

  • Pool composition by provider
  • Bounce rate per pool
  • Weekly quality trends
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Your Data

Your real pool

Measured directly from your own setup, not an average. See exactly where you stand.

  • Your exact sub-pool split
  • Your real Google representation
  • Drift alerts when it moves

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will always be free.

Warmup ≠ warming

Deliverability problems you could not explain, until now. 3rd party analysis of 4 sequencers' warmup.