Validation · API

Email Validation

Check syntax, MX records and deliverability, and flag disposable or role addresses.

POST /v1/validate/email

200 OK

{
  "email": "[email protected]",
  "valid": true,
  "deliverable": true,
  "disposable": false,
  "role": false
}

Capabilities

Why teams use it

Deliverability checks

Syntax, MX and mailbox signals in one call.

Disposable detection

Block temporary and throwaway domains.

Role & free flags

Spot role and free-provider addresses.

Real-time

Fast enough to run right at the signup form.

Request

Call it in your language

curl -X POST https://api.locanium.com/v1/validate/email \
  -H "Authorization: Bearer sk_live_..." \
  -H "Content-Type: application/json" \
  -d '{"email":"[email protected]"}'

Response

What you get back

validboolean
Whether the address is valid
deliverableboolean
Likely to receive mail
mx_foundboolean
MX records present
disposableboolean
Disposable/temporary domain
roleboolean
Role address (info@, admin@)
freeboolean
Free provider (gmail, etc.)

Use cases

What you can build

Signup quality

Block typos, disposable and role addresses at the form.

Deliverability

Protect sender reputation before you send.

Lead scoring

Flag free vs business domains.

Validation family

Phone Validation VAT Validation IBAN Validation

Full parameters, errors and code samples are in the API reference.