B2B data & cold email,
explained properly.
Long-form guides written for practitioners — no fluff, no filler. How verification actually works, what keeps cold email out of spam, and how to buy data without getting burned.
How email verification works
Syntax checks, DNS and MX lookups, live SMTP probes — what each layer can actually prove, why catch-alls resist a verdict, and why verifying at export beats verifying at collection.
Read the guideCold email deliverability, explained
Sender reputation mechanics, SPF/DKIM/DMARC, warm-up and volume ramps, the bounce-rate thresholds that matter, and why list quality is the single biggest lever you control.
Read the guideHow to build a B2B lead list
From ICP definition to firmographic filters, market sizing, segment prioritization, verification, enrichment, and export — including running the whole loop through an AI agent.
Read the guideB2B data providers, compared honestly
A vendor-neutral framework for evaluating ZoomInfo, Apollo, Cognism, and the rest: coverage against your real market, verification methodology, pricing motion, and cost per usable contact.
Read the guideLooking for definitions rather than deep dives? The glossary covers the terms; for our own methodology, see how we verify.
Read enough.
Pull a verified list.
Search 565.8M contacts across 184 countries and build a personalized 25-lead sample.