Self-hosted verification infrastructure

Know which inboxes are real before you press send.

MailVerifio combines syntax, DNS, and direct SMTP checks in a private stack you control—then exposes the same signals through a focused console and REST API.

Verify an address Explore the API

No per-credit billing
Data stays on your deployment
Open implementation

Live API contract

POST /v1/verify

cURL

curl --request POST \
  --url https://api.mailverifio.com/v1/verify \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{"email":"person@example.com"}'

Syntax

Passed

SMTP

Passed

Mailbox

Passed

Syntax

Normalize the address and reject malformed input before network work begins.

Mail routing

Resolve MX records and confirm that the domain is configured to receive mail.

SMTP

Contact the receiving server and classify mailbox, catch-all, and delivery signals.

One verification stack

From a single lead to a full list.

Each workflow now has a stable URL, a focused interface, and a direct path into the documentation.

One address

Verification console

See every syntax, MX, SMTP, disposable, role, and catch-all signal in one result.

CSV workflow

Bulk list cleanup

Deduplicate an uploaded list, classify each address, and export a clean results file.

Pattern search

Professional finder

Provide a name and company; MailVerifio tests common workplace address patterns.

REST API

Developer integration

Use stable JSON envelopes, bearer authentication, request IDs, and copy-ready examples.

Ready to inspect a delivery path?

Run the first check in the console or wire it into your product.

Open console Read docs