Practical B2B sales intelligence,
written from the build log.
Kustiq profiles any B2B domain in 60 seconds at $0.20 per verified profile. Every post below is backed by pipeline data from 2,671 classified companies, not vendor decks.
We Probed 211 B2B Domains: 67% Are Catch-All, and No Email Format Covers 1 in 6 Companies
First-party data from 3,508 recorded SMTP probe outcomes: catch-all domain rate, business email format distribution, and how often plausible addresses get refused.
Latest posts
Showing 1 to 13 of 18Cheaper Apollo Alternatives for Founders (2026): 7 Tools With Verified Pricing
Apollo's per-seat pricing adds up fast for a founding team. Seven alternatives with live-verified prices, from a $39 flat plan to a $0.025 email finder, plus when Apollo is still the right call.
ZoomInfo Alternatives for Startups (2026): 7 Tools With Real Prices, No Sales Call
ZoomInfo starts around $15K/year, quote-only. Seven alternatives a startup can buy this afternoon: real verified pricing, free tiers, and the trade-offs nobody prints.
AI Company Research Tools (2026): What They Actually Do, and How to Pick One
Company research tools split into three shapes: manual source-reading, static databases, and AI tools that read the live web per request. What each costs, where each fails, and free ways to test all three.
B2B Email Finder (2026): 6 Tools Compared by How They Actually Find Emails
Every B2B email finder uses one of three architectures: pattern crawling, a static database, or live generation with SMTP verification. Which one you pick decides your bounce rate. Six tools, real prices.
Clearbit Alternatives (2026): 7 Tools to Replace Breeze, With Real Prices
Clearbit is now HubSpot Breeze: credits cost $0.45 each and require a paid HubSpot seat. Seven alternatives with verified pricing, free tiers, and honest trade-offs.
Email Finder and Verifier (2026): Why It Should Be One Step, Not Two Tools
Most teams run a finder, export a list, then pay a verifier to clean it. Here is what that two-tool stack costs, where it silently fails on catch-all domains, and when one delivery-time step replaces both.
Find Decision Maker Emails (2026): How to Identify the Right Person and Reach Them in One Step
Finding a decision maker's email is two problems: figuring out who actually decides, then getting an address that will not bounce. How to do both by hand, and how the one-step version works.
How to Find a CEO's Email Address (2026): Free Methods That Work, and When Not to Use Them
CEO emails are easier to find than most guides admit, if you know where executives leave them in public. The methods, the verification step, and the honest rule for when emailing the CEO is the wrong move.
How to Find Someone's Business Email (2026): 6 Methods That Still Work
Six ways to find someone's business or work email, from free manual methods to verified lookup tools, plus the verification step most guides skip and the catch-all trap that makes guessed addresses bounce.
Hunter.io Alternatives (2026): 6 Tools Compared, and the Catch-All Problem Nobody Prints
Hunter is the cheapest email finder at ~$0.025 per find. The catch: pattern guessing cannot be verified on catch-all domains, which are 66.8% of B2B domains we probed. Six alternatives with real prices.
How to Verify an Email Address Without Sending an Email (2026)
You can check whether a mailbox exists without ever sending a message, using the SMTP handshake mail servers run before accepting delivery. The manual method, its limits, and when a tool is the honest answer.
Sales Intelligence Tools for Small Teams (2026): Real Pricing, No Per-Seat Tax
Most sales intelligence pricing assumes a full sales team. Ten tools compared for 1 to 5 person teams: real 2026 pricing, a 3-person cost table, and the per-seat traps to avoid.
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