every address stands trial
make cold mailing great again
Verdict probes every mailbox over SMTP and refuses to send what will bounce. No contact database, no credits, no guessing — evidence, or it does not ship. And because it runs on your machine, your list is never uploaded anywhere. Not even to us.
open a case — free, no signup
free · no signup · nothing you type is stored
want the full engine? join the waitlist:
case study inside: 72 fund managers touched · 24 dead mailboxes caught pre-send · ~2% bounce
Apollo, Hunter, Instantly, Clay — they hand you a list. Nobody tells you one in ten of those mailboxes is a dead letter. Verdict is the gate that sits in front of any list you already bought, so every address proves it is alive before it ships.
the truth layer for your existing stack — built after burning 24 dead addresses in a 72-name list
the impersonation test · free, no signup
Anyone can sign your name.
Four records decide whether it holds up.
SPF, DKIM, DMARC and MX are what stop a stranger sending mail as you — and what decide whether your own mail is believed. Most companies have never read their own. Some are wide open and have no way of knowing.
Audit your domain — 3 seconds →How it works
Pattern inference from the public web. No contact database, no credits, no scraped lists. Verdict reads what companies publish about themselves and infers the rest.
Every candidate is put on the stand. An SMTP probe before anything ships, catch-all domains flagged, enterprise gateways named, dead mailboxes stamped and suppressed for good.
Only what cleared the gate leaves your domain. Person-level cooldowns, suppression lists and follow-up eligibility are enforced by the engine — not by your discipline at 2am.
Benchmarks
| Verdict (gate) | Apollo | Hunter | Instantly | |
| What it gives you | confirms contacts are live | the contact list | the contact list | the send pipeline |
| Bounce on shipped mail | <4% | ~9% | ~9% | ~12% |
| Verification timing | before send | n/a | separate | after send |
| Own contact database | no — you keep yours | yes, 265M credits | credits | yes |
| Self-hosted | yes, MIT | no | limited | no |
bounce figures: published docs + community-reported medians, 2026. your mileage varies with copy.
Pricing
- ✓The whole engine, MIT licensed
- ✓Runs on your machine, so the SMTP probe is real
- ✓Your list is never uploaded anywhere
- ✓CLI, Python API and MCP server for agents
- ✓Everything above, nothing to install
- ✓Batch verification and discovery
- ✓Domain audits with shareable reports
- ✓API access for your own tooling
- ✓Email support