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Trusted by 650,000+ senders worldwide

Send Unlimited Cold Email and Reach the Inbox: 90%+ Placement, One Pipeline

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Spam Cipher

SpamCipher is the cold email platform that can promise 90%+ inbox placement, because it owns the whole deliverability pipeline in one place. Unlimited sending, fully automated.

Try our free email verifier
3 free checks
  • 19-point email verification, instant result
  • One pipeline: verify, warm up, place, send, automate
  • 100 bonus credits + a placement test, no credit card
Create my free account 100 bonus credits + a placement test. No credit card.

The cold email platform trusted by 650,000+ senders across the world!

One platform for the entire cold email pipeline

Most teams stitch together a verifier, a warm-up tool, and a sender, and the seams leak. SpamCipher owns all five stages as one connected system, which is the only way to promise you 90%+ inbox placement.

Verify

Clean every address with 19-point verification before you send, so bounces and spam traps never touch your reputation.

Warm

Warm your domains and mailboxes on a real seed network, then keep a baseline running under live campaigns so reputation never goes cold.

Place

Measure exactly where your mail lands with seed-based inbox placement testing, per provider, instead of guessing from open rates.

Send

Send unlimited cold email across warmed domains and mailboxes, with safe per-mailbox limits and automatic throttling built in. Explore Cold Email Sending.

Automate

Build sequences, branch on behavior, and let an AI Reply Agent work every reply, all fully automated on autopilot. Explore Automations.

Reach the inbox

Because every stage feeds the next, 90%+ inbox placement stops being a good month and becomes your baseline.

Get started with SpamCipher

Pick the path that fits where you are, from a quick list clean to a fully automated cold email engine that warms your mailboxes, sends your campaigns, replies for you, and protects your domains.

Simple

List cleaning

No integration. Clean a list whenever you need to.

  1. 1Sign upCreate your free SpamCipher account.
  2. 2Upload your listDrop in a CSV of email addresses.
  3. 3Download clean listGet verified, deliverable contacts back.
Connected

ESP sync

Keep the ESP you already use clean, automatically.

  1. 1Sign upCreate your account.
  2. 2Connect your ESPConnect to Mailchimp, HubSpot and 100+ more in one click.
  3. 3Write back to your ESPVerification results sync straight back into your ESP.
Full loop

Cold email on autopilot

Verify, warm, send, and protect, all in one place.

  1. 1Connect your mailboxesBring your own, or use done-for-you inboxes. Unlimited mailboxes.
  2. 2Warm up automaticallyWe build sender reputation before you ever send.
  3. 3Launch your campaignsMulti-step sequences with A/B variants. Unlimited sending.
  4. 4Let AI handle the follow-upReply agents draft responses and no-code automations run the rest.
  5. 5Stay protectedAlways-on guards throttle or pause a mailbox before it burns your domain.

Not sure which fits? The right path depends on your current stack. We work with you to make integrating and using SpamCipher frictionless.

Create My Free Account

Everything you need to run cold email at scale

Send, automate, verify, warm, place, and monitor. The full cold email pipeline in one platform, so everything you send has the best shot at the inbox.

Send unlimited cold email that lands

Send from your own mailboxes or ones we build for you, warmed on our seed network and sent at volume, so you can scale outbound without torching your reputation.

  • Unlimited sending, no per email fees
  • Send from your own mailboxes or ones we build for you
  • Automatic warm-up on our seed network
  • Automatic inbox rotation across mailboxes and domains
  • Real inbox placement, measured on seed accounts
Explore cold email sending
Cold email sending dashboard showing mailboxes, warm-up, and sending volume

Put your cold email on autopilot

Build multi step sequences in a visual Flow builder, keep audiences fresh with Living Segments, and let an AI Reply Agent work every reply, without ever risking the inbox.

  • Visual Flow builder for sequences
  • Multi step cold email sequences
  • Living Segments that maintain themselves
  • An AI Reply Agent on every reply
  • Automation that never costs you the inbox
Explore automations
Cold email automation Flow builder with sequences and a reply agent

Clean your list so you can send at scale

Verify a single address or upload a whole list. SpamCipher checks every contact in real time and flags the ones that quietly hurt your sender reputation.

  • Invalid and mistyped addresses
  • Spam traps
  • Disposable and temporary inboxes
  • Catch all domains and generic role addresses
  • 30+ data points on every contact
Verify your list
Email verification dashboard showing list health and contact results

Find the right email for any contact

Search by name and company to discover verified professional email addresses, one at a time or in bulk.

  • Find emails from a name and company
  • Confidence scores on every result
  • Verification built into every find
  • Single or bulk lookups
  • Results ready to export
Find emails
Email finder showing a search and a verified result with a confidence score

See what is hurting your inbox placement

Run a full deliverability scan of your sending domain and get a plain language report of what is wrong, why, and how to fix it.

  • SPF, DKIM and DMARC authentication
  • Blacklist and DNSBL exposure
  • Spam trap and infrastructure checks
  • Domain age and reputation signals
  • A trust score with a plain language AI summary
Scan your domain
Domain health scan report with an A grade and authentication checks

Watch DMARC and reputation around the clock

SpamCipher ingests your DMARC reports and monitors your domains and IPs continuously, so problems surface before they cost you.

  • Aggregate and forensic DMARC reports
  • TLS reporting
  • Attribution for each sending source
  • Blacklist and custom IP monitoring
  • Alerts by email and webhook on every change
Start monitoring
DMARC monitoring dashboard with an authentication trend chart and alerts

Keep every list clean, automatically

Connect your ESPs and let SpamCipher verify new and existing contacts on a schedule, with no manual uploads.

  • Scheduled reverification
  • Automatic sync of new contacts
  • Results written back to your ESP
  • Reconcile leads across multiple ESPs
  • Continuous, fully automated hygiene
Automate verification
Verification automation dashboard with a recurring schedule and ESP sync

Works with the tools you already use

Connect SpamCipher to your ESP and stack in a few clicks, and keep verification results flowing where you need them.

  • Connect popular ESPs in a few clicks
  • 100+ supported platforms
  • Sync verification results both ways
  • Webhooks for automation
  • A public REST API with keys
Browse integrations
Integrations hub showing connected apps around a central hub

Why choose SpamCipher?

You want results from your email program. Here is why teams trust SpamCipher to deliver them.

The full cold email loop

Verify, warm up, send, and protect, all from one platform on a single credit balance. No four separate subscriptions to stitch together.

Unlimited sending and mailboxes

Connect unlimited mailboxes and send unlimited cold email from $39. Sending is never metered per email.

Automatic mailbox warm-up

We build sender reputation before you send, so your campaigns land in the inbox instead of spam.

AI agents and no-code automations

AI reply agents draft your responses and no-code flows run the follow-up, so outreach keeps moving without you.

99.8% accurate verification

Verify single addresses, bulk lists, and signups in real time with multi layer checks before you send.

Always-on deliverability protection

Domain Health, DMARC, blacklist, and real seed inbox-placement tests watch your reputation around the clock, and act before a domain burns.

Enterprise security and compliance

SOC 2 Type II, ISO 27001, HIPAA, GDPR, Privacy Shield, and CCPA aligned, with encryption in transit and at rest.

Trusted worldwide, works with 100+ tools

Teams around the world rely on SpamCipher to reach the inbox, and it connects to 100+ ESPs and CRMs both ways.

Clean lists so you can send at scale without burning domains

Popular domain lists (Gmail, GSuite, etc.) Up to 93% faster than complex domains!
300KUnder 10 min
1MUnder 40 min
Mixed or complex domain lists
300K2 hours or less
1M4 hours or less

We give less common domains a thorough examination, so you are never stuck with unknown results.

SpamCipher plugs into the sending tools you already use

Connect SpamCipher's real time verification API to the email marketing and delivery platforms you already use. Verify in bulk, or clean your list automatically as new contacts sign up.

Works with 100+ popular ESPs, CRMs, and email delivery platforms, with two way sync and webhooks for automation.

View all integrations

When it comes to reaching the inbox, the best platform for teams is SpamCipher.

How teams use SpamCipher to protect deliverability and reach more inboxes.

Marcus Rivera
Marcus RiveraHead of Email, TechCorp
Case Study

How TechCorp lifted its inbox rate from 62% to 94%

"Inbox rate went from 62% to 94% after SpamCipher pinpointed the exact content triggers. We were blind before this tool."

Sarah Kim
Sarah KimEmail Marketing Manager, MailFlow
Case Study

How MailFlow caught a silent DKIM failure before it hit

"Found a misconfigured DKIM key that had been silently failing for weeks. The DMARC verification alone saved us from a major crisis."

James Park
James ParkFounder, SendPro Agency
Case Study

How SendPro Agency replaced three tools with one

"We run 200+ campaigns a month. SpamCipher replaced three separate tools in our stack. The seed testing is a game changer."

Elena Torres
Elena TorresVP of Growth, DataSync
Case Study

How DataSync grew open rates 28% in a month

"SpamCipher's content scan caught spam triggers our team completely missed, and the AI insights spelled out exactly how to fix each one. Our open rates jumped 28% in the first month."

Pay once, or bundle everything

Buy credits one time and use them whenever, or get the full pipeline plus continuous deliverability monitoring on one subscription at a lower effective rate. Unlimited cold-email sending and mailboxes are included either way.

Pay-as-you-go
Credits, one time

Buy a pack, use it whenever. No subscription, no expiry.

$39one-time

Starts at 2,000 credits, up to 1,000,000. The more you buy, the lower the per-credit rate.

  • Credits that never expire
  • Real-time and bulk email verification
  • Email Finder with real SMTP checks
  • Domain Health scans and single domain checks
  • AI features and Super Search draw from the same credits
  • Volume pricing: the more you buy, the lower the per-credit rate
  • No subscription, no auto-renew, and never charged for unknowns

Best for occasional cleaning and one-off campaigns.

Buy credits
Included free on every plan

The full outreach suite ships with both pay-as-you-go and SpamCipher ONE, at no extra cost.

Unlimited cold-email sending Unlimited mailboxes Inbox warm-up Campaigns & multi-step sequences No-code automations Unibox (unified inbox) Built-in CRM ESP & CRM sync (100+) AI reply drafting Sending-domain setup & auth A/B subject & body variants Suppression & compliance

Frequently Asked Questions

SpamCipher is the cold email platform for unlimited, fully automated cold email, and the only platform that can promise you 90%+ inbox placement. It owns the whole pipeline in one place: verify your list, warm your domains on a seed network, measure real inbox placement, send across warmed mailboxes, and automate every reply.
Yes. Unlimited volume comes from spreading your sending across many warmed domains and mailboxes, never from blasting one inbox. SpamCipher keeps every mailbox inside a safe daily limit and throttles automatically the moment complaint or bounce rates rise, so you can scale without torching your sender reputation.
Because we own every stage that decides placement. We measure exactly where your mail lands with real seed accounts, warm your domains on our own network, verify your list so bounces stay low, and auto-throttle any risk before it costs you. Most tools own one lever and hope the rest hold; owning the whole pipeline is what lets us promise the number.
Fully. Build sequences, branch on behavior, wait for events, and hand replies to an AI Reply Agent that reads intent, sets the lead status, and notifies you, all inside guardrails. Your outreach runs on autopilot on top of an owned deliverability pipeline, so automation never comes at the cost of the inbox.
Inbox placement testing uses seed email accounts at major providers (Gmail, Outlook, Yahoo, etc.) to determine exactly where your email lands, primary inbox, promotions tab, spam folder, or not delivered at all. Unlike open-rate tracking, seed testing gives you ground truth about deliverability.
We evaluate your email against 60+ rules that mirror what real spam filters check: subject line keywords, image-to-text ratio, HTML structure, link reputation, unsubscribe headers, and more. Each rule returns pass, warning, or fail with specific guidance on how to fix issues.
No. SpamCipher works with any ESP or email sending infrastructure. You simply send a test email to our seed address from your existing setup, and we analyze the result. No DNS changes, no code integration, no SDK installation required to get started.
SpamCipher analyzes your email against 60+ deliverability rules, spam-trigger content, formatting, link and image health, and checks your sending infrastructure (SPF, DKIM, DMARC alignment, and major blacklists). You get a clear deliverability score with the specific issues that hurt inbox placement and exactly how to fix each one, before you send to your real list.
Yes. SpamCipher offers a free forever tier that includes 5 content scans per day, basic authentication checks, and access to our free tools (Spam Score Checker, Blacklist Checker, DMARC Generator, SPF Flattener). No credit card required to sign up.
SpamCipher combines four layers of analysis in one platform: seed-based inbox placement testing, 60+ rule content analysis, authentication verification (SPF/DKIM/DMARC), and AI-powered spam classification. Most competitors offer one or two of these. We also provide a developer-first API for CI/CD integration.

The cold email platform built to reach the inbox starts with SpamCipher

Create My Free Account

Verify your first emails free. No credit card required.

A happy SpamCipher customer