Trueguard Email Verification API

Spec sheet

What it does

The REST API checks email syntax, MX records, SMTP deliverability, disposable domains, catch-all behavior, role-based mailboxes, and free-mail providers in one JSON response.Read 30 Sep 2026 · trueguard.io

Support

The product page directs users to API documentation or support at [email protected].Read 30 Sep 2026 · trueguard.io

API request

The validation endpoint is POST https://api.trueguard.io/v2/email/validation and uses an API key in the request header.Read 30 Sep 2026 · trueguard.io

Company location

The Data Processing Agreement lists Trueguard OÜ at Valukoja 8/2, Tallinn, Estonia.Read 30 Sep 2026 · trueguard.io

Data protection

Trueguard's Data Processing Agreement identifies Trueguard OÜ as a processor under GDPR Article 28 and lists AWS servers in Frankfurt and Ireland.Read 30 Sep 2026 · trueguard.io

Integration languages

The page provides working code snippets for curl, JavaScript, Node.js, Python, PHP, Go, Ruby, C#, and Java.Read 30 Sep 2026 · trueguard.io

Quota and overage

The Standard plan includes 50,000 monthly validations, and overage is billed through Stripe at $0.001 per validation; failed 4xx calls from the customer do not count.Read 30 Sep 2026 · trueguard.io

Speed and accuracy

Trueguard reports a median response time under one second and a false positive rate below 1%, while noting SMTP and catch-all checks depend on the destination mail server.Read 30 Sep 2026 · trueguard.io

Use cases

The API is intended for signup screening, protecting sender reputation, cleaning mailing lists, and qualifying leads when forms are submitted.Read 30 Sep 2026 · trueguard.io

Validation signals

The response includes seven signals, including syntax validity, MX validity, SMTP validity, disposable status, catch-all status, role status, and free-provider status.Read 30 Sep 2026 · trueguard.io

Plans and prices

Every Trueguard Email Verification API plan and price →

Where Specifiction places it

• Email Verification APIs#29 of 317.4