Email verification
that actually works.
Every major provider now detects and lies to SMTP verifiers. We don't play that game. We fuse signals from engagement data, employment history, and delivery feedback to score any address. SMTP is a last resort.
Drop any email.
Watch every signal unfold.
Our resolver queries five data sources in parallel before falling back to SMTP. If we have a recent engagement signal from another source, we don't touch your IPs — and neither does the destination.
Verification is really employment verification.
john@ibm.com is valid if and only if John still works at IBM. We track that. Raw SMTP doesn't.
Ground-truth signals
ESP engagement data from three indie vendors. Our own sequencer delivery feedback. An open means the email works — not a provider's opinion.
Cross-source fusion
Same contact in 5x5 + Salutary + MixRank = very high confidence. One source = treat with skepticism. The scorer tells you which.
Employment decay
People change jobs. Stale-title rows get penalties. Fresh updates get boosts. Your list stays alive even when the market isn't.
128 warmed IPs
A dedicated /25 block, ramped over 6 weeks per industry standard. Randomized jitter, per-domain rotation, hourly blacklist monitor. Safe by default.
Fair pricing. No surprises.
Every verification counts as one credit — cache hits, data-join resolutions, even SMTP. Unused credits don't roll over.