Truelist Documentation

Welcome to the Truelist Help Center. Learn how to verify email lists, understand results, and integrate with your favorite tools.

Quick start

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Why verify an email list? →

Learn why email verification is essential for maintaining good deliverability and protecting your sender reputation.

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Verifying a list →

Step-by-step guide to uploading and verifying your email list with Truelist.

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Understanding results →

Learn what each verification result code means and how to act on them.

Email verification fundamentals

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What makes good deliverability? →

Understand the factors that contribute to high email deliverability rates.

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Deliverability cheat sheet →

Quick reference guide for maintaining excellent email deliverability.

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What is greylisting? →

Learn about greylisting and how it affects email verification results.

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Sending to role addresses →

Should you send emails to role-based addresses like info@ or support@?

Using Truelist

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Verify a single email →

How to verify individual email addresses in real-time.

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CSV download options →

Customize your verification results export with flexible CSV options.

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Using reports →

Understand and utilize your verification reports effectively.

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Chrome Extension →

Verify emails directly in your browser with our Chrome extension.

Integrations

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Brevo →

Validate your Brevo contact list and write verification results back as a custom attribute.

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Clay.com →

Enhance your Clay workflows with email verification.

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Constant Contact →

Validate your Constant Contact list and write results back as a custom field.

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ConvertKit →

Keep your ConvertKit subscriber list clean with automatic verification.

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HubSpot →

Connect Truelist with HubSpot to automatically verify your contacts.

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Klaviyo →

Keep your Klaviyo profiles clean with automatic email verification.

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Mailchimp →

Verify your Mailchimp audience to improve campaign performance.

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Zapier →

Connect Truelist with 5,000+ apps through Zapier automation.

For developers

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API Reference →

Complete API documentation with interactive endpoints and code examples.

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Validation strategies →

Learn about different validation approaches and when to use them.

SDKs & Libraries

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MCP Server →

Validate emails conversationally in Claude, Cursor, or VS Code Copilot — no API key required.

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JavaScript / Node.js →

Official Truelist SDK for JavaScript and TypeScript projects.

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Python →

Official Truelist SDK for Python applications and data pipelines.

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Ruby →

Official Truelist gem for Ruby and Rails applications.

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PHP →

Official Truelist SDK for PHP and Laravel applications.

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Go →

Official Truelist SDK for Go applications.

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Java →

Official Truelist SDK for Java and JVM applications.

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.NET / C# →

Official Truelist SDK for .NET and C# applications.

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WordPress →

Truelist plugin for WordPress sites and Gravity Forms.

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n8n →

Validate emails inside your n8n automation workflows.

Need help?

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Contact support →

Get in touch with our team for personalized assistance.

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Security →

Learn about our security practices and data protection measures.