Scale Outreach Without Burning Your Domain.

Startups move fast — but sending to invalid emails kills your sender reputation before you get traction. VeriMails gives you API-first verification at startup-friendly prices.

Get 100 free credits Read the API docs →

Built for fast-moving teams

API-first verification that fits your stack, your budget, and your pace.

API-First Design

Simple REST API with sub-2 second response times. One endpoint, one API key, JSON in and out. Integrate in 30 minutes or less with code examples for every major language.

Startup-Friendly Pricing

Pay-as-you-go from $0.001 per verification. No monthly minimums, no contracts, no surprises. Scale from 100 verifications to 10 million without changing plans.

Protect Your Domain Early

New domains are fragile. One bad campaign can permanently damage your sender reputation. Verify every email before your first outreach sequence goes live.

Real-Time Signup Validation

Block fake signups at the front door. Add API verification to your signup form and catch typos, disposable emails, and invalid addresses before they enter your database.

Bulk CSV Uploads

Bought a lead list? Export from a prospecting tool? Upload the CSV and get results in minutes. Filter to valid-only and import into your outreach tool of choice.

Works With Your Stack

REST API works with any language or framework. Native integrations with HubSpot, Salesforce, Zapier, and more. Webhook support for async workflows.

Up and running in minutes

No procurement process. No sales calls. Just sign up and start verifying.

Sign up and get your API key

Create a free account in 30 seconds. Get 100 free credits and your API key immediately. No credit card required.

Integrate or upload

Add a single API call to your app, or upload a CSV through the dashboard. Both paths take under 5 minutes.

Send to verified contacts only

Filter results by status, keep the valid addresses, and watch your bounce rate stay under 1%. Scale with confidence.

curl -X POST https://verimails.com/api/v1/verify \

  -H "Authorization: Bearer YOUR_API_KEY" \

  -H "Content-Type: application/json" \

  -d '{"email": "test@example.com"}'

99.2%

Accuracy Rate

Sub-2s

API Response Time

$0.001

Per Verification

100

Free Credits to Start

We integrated VeriMails into our signup flow in 20 minutes. Fake signups dropped by 80% overnight and our email deliverability has been 99%+ ever since.

Alex C. — CTO, Seed-Stage SaaS Startup

Frequently asked questions

Common questions from startup teams.

Yes. VeriMails starts with 100 free credits on signup and pay-as-you-go pricing from $0.001 per verification. There are no monthly minimums, no contracts, and no hidden fees. You only pay for what you use.

Most developers integrate VeriMails in under 30 minutes. The API is a simple REST endpoint — send a POST request with an email address, get back a JSON response with the verification result. We provide code examples in Python, Node.js, PHP, Ruby, and Go.

Yes. The VeriMails API responds in under 2 seconds on average, making it ideal for real-time verification at signup forms, checkout flows, or lead capture pages. Block invalid emails before they enter your database.

API calls will return a 402 status code when your balance runs out. Your account stays active and you can top up instantly. There are no overage charges or surprise bills.

VeriMails works with any stack via the REST API. We also offer native integrations with HubSpot, Salesforce, Mailchimp, and dozens of other tools via Zapier. If you can make an HTTP request, you can use VeriMails.

Start verifying today

100 free credits. No credit card required. No sales call needed.

Get started for free