Introduction

High-performance email validation API for B2B outbound teams

Welcome to GTMAPIs

GTMAPIs is a production-ready email validation SaaS platform designed specifically for B2B outbound teams sending 50k-1M+ emails per month.

What Makes Us Different

Our smart credit system only charges for high-value personal emails:

• ✅ Valid personal emails → 1 credit (high B2B value)
• 🆓 Role-based emails (info@, support@) → FREE
• 🆓 Catch-all domains → FREE
• 🆓 Invalid emails → FREE

Key Features

4-Layer Validation

Syntax, DNS, SMTP, and catch-all detection for maximum accuracy

B2B Quality Scoring

Automatically categorize emails by outbound value

High Performance

Sub-100ms for cached lookups, 70%+ cache hit rate

CSV Upload

Process up to 10,000 emails per upload via web dashboard

Quick Start

Get started in 3 simple steps:

1. Create an Account

   Sign up at gtmapis.vercel.app

2. Get Your API Key

   Generate a test or live API key from your dashboard

3. Make Your First Request

   Send a POST request to validate emails

Production Ready

• API: api.gtmapis.com (Railway)
• Dashboard: gtmapis.vercel.app (Vercel)
• Rate Limit: 1000 requests/minute per API key
• Uptime: 99.9% SLA

Need Help?

Quick Start Guide

Get up and running in 5 minutes

API Reference

Complete API documentation