Email Verification Platform

The Last Email
Validation Tool You'll Ever Need.

Truelist helps you improve your email reputation, deliverability, and engagement — without the hassle of managing credits or worrying about overages.

  • Cuts through "catch-all" domains with layered validation
  • Up to 2x more accurate results than competitors
  • Fixed monthly pricing — no credits or surprise overages
  • Get started in under 2 minutes
Start verifying for free View pricing

No credit card required. Cancel any time.

Truelist
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Upload Your List

Drag and drop or click to upload

CSV, XLS, XLSX up to 10MB

Enterprise-grade security & compliance

verified_user SOC 2 Type II
workspace_premium ISO 27001 Compliant
lock TLS 1.2+ Encryption
public GDPR Compliant

Trusted by teams using

Kit HubSpot Zapier

The Problem

You shouldn't have to deal with
email bounces killing deliverability

Other tools
Verifying email
jane@catchall-corp.com
Ready to verify
Truelist
Verifying email
Enhanced
jane@catchall-corp.com
Ready to verify
The other guys
Truelist
Stuck waiting for hours for larger lists to validate.
Fast validation for single emails and large lists.
Emails at catch-all domains come back as "unknown."
Catch-all "unknowns" resolved to valid or invalid.
You waste money and damage sender reputation.
Bounce risk drops and inbox placement improves.

How It Works

Clean, verify, and protect your list in minutes

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Upload your list or connect via API

Drag and drop a CSV or plug into Zapier, Make, Clay, or your custom stack.

02

We verify every email

We detect invalid, disposable, spam trap, and risky emails with multiple verification strategies.

03

Export or sync a clean list

Automatically push to your ESP, CRM, or cold outreach tool. No manual cleanup needed.

What We Do

What does Truelist do?

Truelist is an email validation tool that protects your brand by removing emails that are likely to bounce, which could harm your sender reputation.

Find and remove invalid emails.
Remove invalid and inactive email addresses, fake users, disposable emails, bots, and spam traps from your email list.
Unlimited, free email validation.
Truelist is the only email validation tool that offers unlimited free email validation!
A powerful API and integrations.
Truelist integrates with thousands of tools and platforms, including Clay.com, Zapier, Make.com, ConvertKit, Mailchimp, and more.

Try it out.

Why Truelist

Built differently, on purpose

Unlimited Validation

Never worry about overages or credits again

Use Truelist as much as you want — one flat rate. Validate lists, single emails, or real-time inputs without worrying about credit limits or surprise charges.

Verify List

Your Lists

Website Signups.csv
0%
0 of 8,127 emails verified
Completed
List Name Emails Uploaded
Q1 Newsletter 12,450 Jan 15, 2026 Download
Conference Leads 3,892 Jan 12, 2026 Download
Verify Email
Result
john.smith@company.com
Verification Details
Valid email format
MX records found
SMTP verified
Mailbox exists
Not a disposable address
Accept-all domain
Enhanced check passed

Multi-Strategy Validation

We don't stop when the domain says "Accept-All"

Most tools stop at a single check. We don't. Truelist combines multiple validation strategies across SMTP, automated browser checks, and 3rd party APIs to give you the most accurate signal possible.

Our Enhanced Validation strategy delivers up to 2x more accurate results than other providers through advanced heuristics and third-party data cross-referencing.

Advanced Reporting

Real insights into your list health

Bounce risk, reason codes, domain quality, and more — so you can take action confidently.

Reports
Total Emails
0
List Health
0%
0
Ok 0
Risky 0
Invalid 0
Unknown 0
Top Failure Reasons
Mailbox not found 0
Catch-all domain 0
Invalid syntax 0
Developer API
Your API Keys
Key Last used
tl_live_sk_a1b2...f6g7 2 hours ago
Quick Example
|
Response
{
  "email": "test@example.com",
  "status": "ok",
  "score": 95
}

Real-Time API + Webhooks

Verify as you go with instant feedback

Integrate Truelist into your signup forms or CRMs and stop bad emails before they enter your funnel.

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.

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_toy
Validate 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.

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OAuth, 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.

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Seven 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.

Read the MCP docs Start free

Built For You

Who is Truelist for?

Truelist is the perfect solution for businesses and individuals who want to improve their email deliverability and campaign performance — whether it's cold email outreach, marketing campaigns, or transactional emails.

contract
SDRs & Account Executives

The perfect complement to your lead generation and cold email marketing tools. It offers reliable email verification at a fraction of the cost, ensuring your emails reach the right inboxes.

Learn more

stacked_email
Email Marketers

Email marketers can save significantly on email verification costs. Enjoy comprehensive verification services without breaking the bank, making every marketing dollar count.

Learn more

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Developers & Automation Experts

For those needing a robust list verification API without the hassle of managing credits, Truelist is ideal. Validate unlimited emails at a fixed monthly cost, simplifying your workflow and budgeting.

Learn more

What People Say

Trusted by thousands of marketers, founders, and SDRs

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.

Grant Ammons, Co-founder of Truelist
Corey Haines, Co-founder of Truelist

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.

From the blog

Learn best practices about email marketing and deliverability.

FAQ

Frequently asked questions

Can't find the answer you're looking for? Reach out to our customer support team.

What is Truelist?
Truelist is a cutting-edge email validation service designed to improve the accuracy and deliverability of your email campaigns by verifying email addresses in real-time and cleaning email lists.
How does Truelist validate email addresses?
Our service uses advanced algorithms and real-time checking to validate email addresses. This includes checking for format correctness, domain validity, and whether the email address is active and accepting mails.
What are the benefits of using Truelist for email validation?
By using Truelist, you can reduce bounce rates, avoid spam traps, improve your sender reputation, and ultimately increase the effectiveness of your email marketing efforts.
Is it really unlimited?
Yes, Truelist offers unlimited free email validation in our platform.
Is Truelist compliant with data privacy regulations like GDPR?
Yes, we prioritize data security and compliance with global privacy laws, including GDPR. Truelist is SOC 2 Type II certified, meaning our security controls are independently audited and verified. We ensure that all data is handled securely and with the utmost respect for privacy. Learn more about our security practices.
Does Truelist have an API?
Yes, we have a powerful API that allows you to integrate Truelist into your own applications and services. You can find our API documentation here.

Ready to put Truelist
to the test?

Find out if Truelist is right for you in under 10 minutes.

Sign up for free

Free plan available. No credit card required.