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ContactLint

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Validate emails and phone numbers before bad leads reach your CRM

Free plan available Visit Website
Tracked since 2026

The Bottom Line

Best for
Developers, RevOps teams, B2B SaaS companies, and AI agents that need to validate emails and phone numbers before they reach a CRM.
Price
Free plan available. Compare plans

What is ContactLint?

ContactLint is a real-time contact validation API and Model Context Protocol (MCP) server for developers, AI agents, and revenue operations teams. It validates email syntax, DNS and MX records, disposable email providers, role-based addresses, and E.164 phone numbers with carrier line-type detection in a single request before bad leads enter your CRM or outbound sequences.

Available on: Web, API

Key Features

  • Email syntax, DNS, MX, and disposable domain detection
  • Phone number E.164 formatting and carrier line-type lookup
  • Hosted remote MCP server at contactlint.com/mcp and REST API
  • Sub-second JSON response for signup forms and CRM workflows
  • Hosted MCP server for email and phone validation

Pricing Plans

Pricing checked Oct 24, 2026. Source: contactlint.com/buy, read Oct 24, 2026

ContactLint plans and prices, checked October 2026
Plan Price Details
Free

Free

  • 100 free checks each month
5,000 checks

$9 one-time

  • 5,000 pre-send checks
25,000 checks

$35 one-time

  • 25,000 pre-send checks
100,000 checks

$99 one-time

  • 100,000 pre-send checks

Is ContactLint worth the price?

Good value

The pricing is very fair and generous for small to medium batch validation needs.

The free tier offers 100 monthly checks, and the one-time packs provide excellent per-check rates, with the $35 for 25,000 checks being the best value at $0.0014 each. This model is ideal for users who need occasional email or phone validation without committing to a subscription.

Full ContactLint pricing: every plan, hidden costs and alternatives

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