SMTP Email deliverability & risk signals

Know which email addresses you can trust.

Confirm whether an address can receive mail, detect disposable inboxes, and identify catch-all domains before they enter your product or next campaign.

Mailbox deliverability Catch-all detection Disposable email detection

ADDRESS[email protected]

VERIFICATION TRACE

req_7d10f2

MAILBOX

Recipient check

CHECK COMPLETE

DNSexample.com resolved12 ms
MXmx1.example.com selected38 ms
SMTPRecipient handshake completed241 ms
TEMPDisposable domain intelligence checkedchecked

250 2.1.5Recipient acceptedSMTP

What you get

One check. The signals that matter.

SMTP

Recipient-level checks

Follow DNS and MX records, then ask the receiving mail server whether it will accept the address.

RISK

Temporary inbox detection

Identify disposable providers and short-lived inbox domains before they become low-quality accounts or leads.

CONTROL

Built for controlled access

API keys, authenticated access, concurrency controls, and per-user verification history are included.

Inside a verification

See exactly how an address is checked.

01Normalize the address and validate the domain
02Resolve MX records and connect to a public mail server
03Run an SMTP recipient check and a catch-all probe
04Check the domain against disposable email intelligence

A small API surface

One request. A result you can act on.

Get deliverability, catch-all, and disposable signals in one consistent response so your application can decide what happens next.

RequestPOST /verifications

curl -X POST https://api.verifyemail.net/api/v1/verifications \
  -H "Authorization: Bearer $TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"address":"[email protected]"}'

Response200 OK

{
  "errcode": 0,
  "address": "[email protected]",
  "is_deliverable": true,
  "status": 250,
  "catch_all": false,
  "disposable": false
}

Stop invalid and disposable addresses at the door.

Create an account and inspect your first address in minutes.