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DEVELOPER API

Email Deliverability,
Programmable.

A single REST API to validate emails, check DMARC records, and monitor blacklists — with sub-150ms responses, 99.9% uptime SLA, and SDKs for every major language.

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terminal
$ curl -X POST https://api.validpeak.com/v1/email/validate \ -H 'Authorization: Bearer vp_key_••••••••' \ -d '{"email": "you@yourdomain.com"}'// 127ms{ "valid": true, "score": 0.97, "deliverable": "yes"}
API REFERENCE

Three Endpoints.
Infinite Possibilities.

Validate emails, inspect DMARC policies, and check blacklists — all from the same authenticated session.

POST/v1/email/validateVerify deliverability, syntax, MX records, and disposable status in real-time.
curl -X POST https://api.validpeak.com/v1/email/validate \  -H 'Authorization: Bearer vp_key_••••••••' \  -H 'Content-Type: application/json' \  -d '{"email": "user@example.com"}'
RESPONSE
{  "valid": true,  "score": 0.97,  "deliverable": "yes",  "format": "valid",  "mx": true,  "disposable": false,  "role": false}
PERFORMANCE & RELIABILITY

Built for Production
From Day One

Enterprise-grade infrastructure with transparent SLAs, so you can ship with confidence and never worry about deliverability at scale.

<0ms
p99 Response Time
Median under 80ms
0%
Uptime SLA
Guaranteed per contract
0 req/min
Default Rate Limit
Higher limits on request
API Key & OAuth 2.0
Authenticate with a static key for server-to-server calls or OAuth 2.0 for user-delegated access.
Global Edge Network
Requests are routed to the nearest PoP automatically — no region configuration needed.
Real-time Webhooks
Push validation events and alert notifications to any HTTPS endpoint with signed payloads.
OpenAPI 3.1 Spec
Machine-readable spec with interactive Scalar playground. Generate typed clients in seconds.
SDKs & Code Samples
Official SDKs for Node.js, Python, Go, Ruby, and PHP. Community packages for others.
SOC 2 Type II Ready
Data processed in-region, encrypted at rest and in transit. No email data retained after response.
Start Building Today

Your first 1,000 validations
are on us.

No credit card required. Free tier includes email validation, DMARC checks, and blacklist monitoring. Scale up when you need to.

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No credit card · Free tier forever · Upgrade anytime