99.99% Uptime SLA

From developers,
to everyone.

Integrate the V4.5 Cluster directly into your own SaaS, CRM, or internal applications. Mailvah provides unthrottled, agentic infrastructure built for massive scale.

root@mailvah-dallas:~
$
// Response from V4.5 Bare-Metal Cluster (185ms)
{
  "email": "ceo@apollo.io",
  "status": "deliverable",
  "catch_all": true,
  "heuristic_score": 99.9,
  "execution_node": "us-dallas-core-01"
}
$

We are not an API Wrapper.

Most verifiers are just API wrappers renting shared IP blocks from AWS or DigitalOcean. When AWS throttles them, they throttle you. Mailvah owns the entire verification stack, end-to-end.

Standard SaaS APIs

  • Hard rate limits (e.g., 60 requests/min)
  • Shared IPs result in frequent greylisting
  • High latency (600ms+ per verification)

Mailvah Bare-Metal API

  • Unthrottled Enterprise Throughput
  • Dedicated IP assignments (Apex Tier)
  • ~200ms ultra-low latency execution

Core Endpoints

POST /v1/verify/single

Triggers the V4.5 Heuristic ping against a single target. Returns status, score, and Catch-All data.

POST /v1/verify/bulk

Accepts CSV or JSON arrays up to 50,000 rows per request. Processes asynchronously via Mailvah Workers.

GET /v1/monitor/status

Pings the Blacklist Monitor to return real-time DMARC, Spamhaus, and Barracuda reputation scores for your domains.

POST /v1/extract/hunt

Dispatches Discovery (D) Credits to extract verified leads based on specific parameters (Title, Domain, Location).

Agentic Webhook Triggers

Don't poll the API waiting for bulk jobs to finish. Mailvah is built for agentic, event-driven architectures.

Register your endpoints in the Developer Hub. When our Mailvah Workers complete a 10,000-row bulk wash, or when the Domain Monitor detects a blacklist threat, we immediately push a secure, signed JSON payload directly to your server.

  • Event: `wash.completed`
  • Event: `domain.blacklisted`
  • Event: `waterfall.rescued`

Webhook Signature Verification

const crypto = require('crypto');

function verifyWebhook(req, secret) {
  const signature = req.headers['x-mailvah-signature'];
  const hash = crypto
    .createHmac('sha256', secret)
    .update(JSON.stringify(req.body))
    .digest('hex');

  return signature === hash;
}

Cryptographic Security Standards

Every API request is secured via TLS 1.3. Your master API keys are generated using 256-bit entropy, and all payloads processed by our Dallas node are immediately purged from active memory post-verification. We log metadata for billing; we do not store your leads.

View Enterprise Privacy Policy

Generate your Secret Key.

Sign up for a Sandbox node and get 115 free verification credits to test the API instantly.

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