1B+ emails validated
Dead emails are wrecking your deliverability
Truelist verifies your list against real mail servers — catching the catch-alls other tools shrug at. Pay-as-you-go credits that never expire, or go unlimited. Clean your list in the next five minutes.
No credit card required · Credits never expire
Upload Your List
Drag and drop or click to upload
CSV, XLS, XLSX up to 10MB
1B+
emails validated
2x
more accurate on catch-alls
SOC 2
Type II certified
GDPR
compliant
Trusted by teams using
The most accurate way to clean an email list
Everything you need to protect your sender reputation and reach the inbox.
Up to 2x more accurate
Enhanced Validation resolves the catch-all "unknown" addresses other tools give up on — layered SMTP, real-browser, and third-party checks.
Credits that never expire
Pay as you go from $0.70 per 1,000. Buy once, use whenever — no monthly reset, no wasted balance. Or go unlimited from $799/mo.
Deliverability built in
Monitor SPF, DKIM, DMARC, and blacklists so you catch reputation problems before they land you in spam.
Connects to everything
50+ native integrations, a full REST API, and an MCP server so Claude, Cursor, and Copilot can validate for you.
Verification Details
Weed out bad emails before you send
Protect your brand by removing emails that are likely to bounce, which could harm your sender reputation.
- SMTP Validation
- Validate domains and query SMTP servers to remove invalid, inactive, parked domains, and invalid accounts.
- Spam trap checking
- Clean spam traps to improve your reputation score and avoid being identified as a spammer.
- DNS record checking
- Ensure that an email's DNS and MX records are valid.
- Disposable emails
- Identify and remove disposable email domains from your lists.
- Duplicates removal
- Identify and remove duplicate emails from your lists.
- Accept-all domains
- Spot and flag domains that accept any email addresses.
Clean in three steps
Upload or connect
Drop in a CSV or connect your ESP — Mailchimp, Klaviyo, HubSpot, and more.
Validate in real time
Every address is checked against actual mail servers — not a syntax regex.
Ship a clean list
Export your verified list or auto-sync it back, and watch your bounce rate drop.
Agent-Native
Built for Claude, Cursor, and agent-first workflows
Our hosted MCP server lets AI assistants validate emails, manage batches, and explore your account through natural-language tool calls. No API keys to copy. OAuth once and you're connected.
- smart_toyValidate from anywhere
Use Claude Desktop, Claude Code, Cursor, or VS Code Copilot. Same verification stack as the API, driven by chat — perfect for ad-hoc list cleanup and prototyping batch jobs.
- lockOAuth, not API keys
Connect once in your browser. Tokens are short-lived and scoped to your account, with no long-lived secrets pasted into config files. Revoke access any time from your Truelist settings.
- hubSeven tools, one server
Single-email validation, batch creation, batch state, account info, and history queries — all the building blocks an agent needs to run real email-hygiene workflows end to end.
Simple pricing that scales with you
Start free. Pay as you go with credits that never expire, or go unlimited for high volume.
Free
$0
forever
Kick the tires — no credit card required.
- check 100 free validations
- check Standard + enhanced catch-all resolution
- check Syntax, DNS & SMTP checks
- check 1 team member
Pay as you go
Most flexible$0.70 / 1,000
credits never expire
Buy credits and validate bulk lists or wire up the API — volume rates all the way down to $0.70 per 1,000.
- check 1 credit per validation · $14 for 10,000
- check Enhanced catch-all resolution on demand
- check Credits never expire
Unlimited
from $799 /mo
for high-volume senders
Validate as much as you want on a flat price, with monitoring and enhanced resolution included.
- check Unlimited standard validations
- check 10,000 enhanced catch-all resolutions per month
- check Deliverability monitoring included (25 domains + 50 sending IPs)
- check API access & integrations
Need SLA, SOC 2, and SSO on contract terms? Talk to us about Enterprise.
The Team
Created by industry veterans
Grant Ammons is a seasoned software developer and email marketing professional with over 15 years of experience in the industry. He was previously head of engineering at ConvertKit, a leading email service provider for creators.
Corey Haines brings 9 years of startup marketing expertise, having helped scale multiple companies from early-stage to growth. His deep understanding of customer acquisition, email deliverability challenges, and go-to-market strategies informs product strategy and growth.
Switch to Truelist and never look back
What People Say
Trusted by thousands of marketers, founders, and SDRs
Frequently asked questions
How accurate is Truelist? + −
Standard validation checks syntax, DNS, and does a live SMTP check against the mail server. For catch-all domains that return "unknown," Enhanced Validation layers in real-browser and third-party checks to resolve them — up to 2x more accurate than tools that stop at SMTP.
How does pricing work? + −
Start free with 100 validations, no credit card. After that it's pay-as-you-go: 1 credit per validation, with volume rates down to $0.70 per 1,000, and credits never expire. Sending at high volume? Unlimited plans start at $799/mo.
Do credits expire? + −
Never. Buy credits once and use them whenever you need — no monthly reset, no wasted balance.
Can I connect it to my tools? + −
Yes — 50+ native integrations (Mailchimp, Klaviyo, HubSpot, and more), a full REST API, and an MCP server so AI agents like Claude, Cursor, and Copilot can validate for you.
Is my data safe? + −
We're SOC 2 Type II certified and GDPR compliant, and we handle uploaded lists under the same security controls as our paid platform.
Clean your list in the next five minutes
Start free with 100 validations — no credit card required.