01queued
Leads added
From your CRM, a spreadsheet or the API. Anyone who already opted out is filtered before anything else happens.
CogniLead
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PricingLog in100 free sends — no credit card.
Cold email that lands. In the inbox, not spam.
CogniLead runs warmup, reputation and sending for you — nothing to configure, no dashboards to babysit.
Built to stay out of spamReplies & bounces handled for youOne-click unsubscribe, every email
An illustrated example run of CogniLead working in parallel: new leads come in and anyone who opted out is filtered, sending domains warm up to ready, every send is checked against the suppression list, domain reputation and region right before it goes out — a slipping domain is paused and the send rerouted — and replies, bounces and unsubscribes are handled automatically. All data shown is illustrative.
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- GitHub
- Anthropic
- Mistral
How it works
From your leads to the inbox — nothing for you to manage.
You bring the leads. Everything between them and the inbox — the warmup, the safety checks, the follow-up — happens automatically.
02warming
Domains warmed up
Sending domains build trust with inboxes in the background, on their own schedule. There is nothing to babysit.
03checked
Reputation checked
Every send is re-checked against live domain health right before it goes out, not once a day.
04One of two
Sentsent
Through whichever warmed domain is healthiest right now.
Pausedpaused
A slipping domain leaves rotation before it drags the rest down.
05handled
Replies, bounces & opt-outs handled
Every email carries a working one-click unsubscribe. Once someone opts out, they are never contacted again.
The wedge
Deliverability ops, not a send button.
Smartlead and Instantly hand you a queue and a warming toggle. CogniLead ships warming, reputation monitoring, and gate-checked scheduling as first-class infrastructure — the operations layer that keeps cold email out of spam, in any region. You bring the leads; this is the part that’s hard to run yourself.
A circuit breaker for your sending reputation
One bad list or a spike in complaints shouldn’t be able to drag your whole domain pool into spam — so the breaker trips before that happens, not after you notice open rates cratering.
How · Every domain is watched continuously for the signals inboxes actually use — complaints, bounces, engagement. The moment one looks unhealthy it’s pulled out of rotation automatically, then rejoins on its own once it recovers.
Every send goes out through whichever domain in the pool is healthiest right now.
Warming never stops running
Most tools treat warming as a setting you flip once and forget. Here it runs continuously, for as long as you send.
How · Your sending domains keep building trust with each other in the background, and every send automatically goes out through whichever domain is healthiest right now.
Your data stays where it should
If you sell into the EU, UK, or elsewhere with real data-residency expectations, "we have a compliance policy" isn’t the same as your data actually staying local.
How · Each lead is processed in its own region — EU, UK, US, Switzerland, and more — so where your data lives matches where your customers actually are.
Who it's for
Built for whoever is already sending cold email.
The deliverability layer is the same underneath — what changes is the shape of the risk you're protecting against.
Developers & AI-GTM builders
Cold-email deliverability that lives in your codebase.
Learn moreAgenciesRun client outbound without one bad list burning the pool.
Learn moreB2B SaaS teamsCold outbound that does not compete with your product email.
Learn moreRecruiters & staffingKeep candidate and client outreach out of spam, at volume.
Learn moreSales teams & SDRsOne deliverability engine instead of three separate subscriptions.
Learn moreSolo founders & indie hackersDeliverability that runs unattended, priced for low volume.
Learn moreThe engine underneath
The deliverability engine that never sleeps.
Warms domains, watches reputation, and routes every lead to the right region — continuously, in the background, whether you're watching or not.
01
Every domain warmed up automatically
A managed pool, warmed before it sends a single lead.
02
Pauses itself if something looks wrong
A slipping domain leaves rotation on its own.
03
Opt-outs honored in under a minute
Checked against the suppression list before every send.
04
One-click unsubscribe on every email
RFC 8058 headers plus a footer link, always.
05
Each lead processed in its own region
EU, UK, US, Switzerland — where the data belongs.
Signals
All of the signals, none of the noise.
CogniLead reads reputation, bounces, complaints, warmup and routing for every domain, all the time. You only hear about the row that needs you, and by then it has already been handled.
How the auto-pause worksOverview· Signalslive
| Signal | Value | Status |
|---|---|---|
| Domain reputation | HIGH · 6 of 7 domains | ok |
| Bounce rate, 7 days | 0.4% | ok |
| Spam complaints, 7 days | 0.02% | ok |
| Warmup progress | day 5 of 7 | warming |
| send-3 · reputation MEDIUM | pulled from rotation | auto-paused |
| Jurisdiction routing | EU leads → EU region | ok |
Runs on
CloudflareDNS & email routing
SupabasePostgres, tenant-isolated
StripeBilling
For developers
REST API. MCP server.
Build anything on CogniLead.
A full REST API and a published MCP server for Claude Desktop, Cursor, and Windsurf — no UI required. Push leads in, run campaigns, and manage suppressions straight from your own code or your AI IDE.
Outbound done right
Clean lists, honored opt-outs.
Good outbound starts with respecting the people on the other end. Every email you send includes a real unsubscribe option, opt-outs are honored immediately, and we step in before a problem can spread — so your list stays clean without you having to watch it.
Unsubscribe built into every email
Every email includes a one-click unsubscribe link that works in a single tap — no forms, no "reply to unsubscribe," no friction for the recipient.
Opt-outs honored instantly
The moment someone unsubscribes, they’re added to YOUR suppression list within seconds — scoped to your account, not shared across CogniLead. Once suppressed, that address is never contacted again by any campaign of yours.
We pause before things go wrong
If a sending domain starts looking unhealthy, we pause it automatically — before it can drag down the rest of your sending. One bad batch can never take everything down with it.
The rules, plainly
Every send passes the same checks, automatically — reputation and opt-outs are never something you have to remember to watch, and GDPR-aligned handling comes built in, not bolted on.
Always
A working, one-click unsubscribe on every email you send.
A suppression list, checked automatically before every send.
Unsubscribes and bounces removed from your list — automatically.
Never
Sending to anyone who has already opted out.
Re-adding someone to a sequence after they unsubscribe.
Sending an email without a working way to opt out.
FAQ
Questions teams ask before they buy.
The short, honest answers on how the deliverability engine actually works.
What CogniLead is
It handles everything between your leads and their inbox: warming up your sending domains, watching your reputation and pausing automatically if anything looks risky, tracking replies and bounces, and honoring every unsubscribe instantly. You bring the leads; we keep the mail out of spam.
You supply them — import them from your CRM, upload a spreadsheet, or pull them from a scraper or a tool like Apollo or Clay. CogniLead is the deliverability layer downstream of wherever you find your leads; it does not build or sell a contact database.
No. You supply the leads and CogniLead runs the deliverability — warmup, personalization, cleanup, and one-click unsubscribe. We do not build, rank, or sell a contact database — enrichment is an optional, separately-billed add-on (see below); we are the layer downstream of wherever you already get your leads.
How it works & what it costs
That is the whole product. Every domain sends from a pool that is kept warm automatically, and we continuously watch spam rate and reputation — pausing a domain the moment something looks off, before it can drag down the rest of your sending. Every email ships with a working one-click unsubscribe, and opt-outs are honored automatically.
An optional, separately-billed step on lead intake: when you have no "why now" fact of your own, CogniLead buys one from an enrichment vendor and the pitch cites it. You are charged per enriched lead, and only when the vendor returns a fact with a source behind it — a miss costs nothing.
Below your plan’s cap (e.g. 44,000 emails on Growth) sends are covered by the base price. Past that, each extra send is billed at your plan’s rate ($0.035 on Growth) and you see the running total live in your dashboard. The free plan never bills overage — it simply stops at its send credit.
Your leads deserve to reach an inbox.
Every email you send without protection is a gamble on whether it reaches the inbox at all. Bring your leads — CogniLead handles the warmup, the safety checks, and the cleanup, so you don't have to think about deliverability again.
100 free sends to start · no credit card · cancel any time