Turn Cold Outreach Into Booked Meetings
Find prospects, warm your mailboxes, and send unlimited campaigns. Built on high-performance deliverability infrastructure designed to improve domain reputation and substantially increase reply rates.
100 bonus credits + a placement test. No credit card.
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CCPACompliant
ISO 27001Certified
HIPAACompliant
EU GDPRCompliant
Privacy ShieldFramework
SOC 2Type II
The cold email platform trusted by 650,000+ senders across the world!
Send
Send unlimited cold email across warmed domains and mailboxes, with safe per-mailbox limits and automatic throttling built in. Explore Cold Email Sending.
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.
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.
Simple
List cleaning
No integration. Clean a list whenever you need to.
- 1Sign upCreate your free SpamCipher account.
- 2Upload your listDrop in a CSV of email addresses.
- 3Download clean listGet verified, deliverable contacts back.
Connected
ESP sync
Keep the ESP you already use clean, automatically.
- 1Sign upCreate your account.
- 2Connect your ESPConnect to Mailchimp, HubSpot and 100+ more in one click.
- 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.
- 1Connect your mailboxesBring your own, or use done-for-you inboxes. Unlimited mailboxes.
- 2Warm up automaticallyWe build sender reputation before you ever send.
- 3Launch your campaignsMulti-step sequences with A/B variants. Unlimited sending.
- 4Let AI handle the follow-upReply agents draft responses and no-code automations run the rest.
- 5Stay protectedAlways-on guards throttle or pause a mailbox before it burns your domain.
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
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
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
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
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
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
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
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
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.
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.
Integrations
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.
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 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 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 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."
The Complete Guide to Email Authentication in 2026
Everything you need to know about SPF, DKIM, DMARC, and the new BIMI standard for verified brand logos.
Read more →
Gmail's 2026 Filtering Changes: What Senders Must Know
Google has tightened its spam filtering again. Here is what changed and how to adapt your sending strategy.
Read more →
Why You Need Seed-Based Inbox Placement Testing
Open rate metrics lie. Seed testing gives you ground truth about where your emails actually land.
Read more →
How to Clean Your Email List the Right Way
Remove invalids, spam traps, and stale contacts to cut bounces and protect your sender reputation.
Read more →
Reading Your DMARC Reports Without the Headache
Aggregate and forensic reports decoded, so you can see who is sending as you and fix alignment fast.
Read more →
Blacklist Monitoring: Catch Problems Before Gmail Does
Watch your domains and IPs across the major blocklists and get alerted the moment you are listed.
Read more →
The Content Mistakes That Quietly Send You to Spam
Trigger words, bad text to image ratios, and broken links. Learn what filters flag and how to clean it up.
Read more →
Sender Reputation 101: How to Build and Protect It
What shapes your reputation, how mailbox providers score you, and the habits that keep you trusted.
Read more →
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.
Best value
SpamCipher ONE
The whole pipeline plus always-on monitoring, in one subscription.
$99/mo
Bundles 10,000+ monthly credits that roll over while active. Annual billing saves 20%.
- 10,000+ monthly credits at a lower per-credit rate
- Credits roll over month to month while active
- Everything credits cover on pay-as-you-go
- Continuous Domain Health, DMARC, blacklist, and custom-IP monitoring
- Seed-based inbox placement tests, 100 a month included
- Email server tests, 100 a month included
- Warm-up mailboxes, 5 included then $20/mo each
- Annual billing saves 20%
Best for teams sending and scaling outbound continuously.
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
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.