Pricing

$0.50 / 1,000 email address verifieds

Email Verifier — Syntax + MX + SMTP Probe

Verify email addresses via three checks — RFC syntax, DNS MX record presence, and SMTP RCPT TO probe with a short timeout. One row per email with verdict, MX hosts, reason. Pure protocol, datacenter-friendly.

Pricing

$0.50 / 1,000 email address verifieds

Rating

0.0

(0)

Developer

vøiddo

Actor stats

Bookmarked

Total users

Monthly active users

6 days ago

Last modified

Example output row

{
  "email": "hello@stripe.com",
  "syntaxValid": true,
  "domain": "stripe.com",
  "mxHosts": ["aspmx.l.google.com", "alt1.aspmx.l.google.com"],
  "mxOk": true,
  "smtpAccepts": "accepts",
  "reason": "ok"
}

How to use

Pass a list of email addresses. The actor runs syntax → MX → SMTP in sequence for each one.

Input schema:

{
  "emails": ["hello@stripe.com", "support@github.com", "press@anthropic.com"],
  "smtpProbe": true,
  "timeoutSeconds": 8
}

Field	Type	Default	Description
`emails`	array of strings	prefill examples	Email addresses to verify
`smtpProbe`	boolean	`true`	Connect to MX and issue RCPT TO probe. Slower but more accurate. Disable for MX-only checks.
`timeoutSeconds`	integer	`8`	Per-email SMTP connection timeout in seconds

Output fields:

Field	Type	Notes
`email`	string	Input address
`syntaxValid`	bool	RFC syntax check passed
`domain`	string	Domain part of the address
`mxHosts`	list	MX hostnames sorted alphabetically
`mxOk`	bool	At least one MX record found
`smtpAccepts`	string	`accepts` / `rejects` / `unknown`
`reason`	string	Human-readable explanation or `ok`

Pricing

Event: email_verified — one email address checked (syntax + MX + optional SMTP probe).

Rate: $0.0005 per email verified.

Verifying 1 000 addresses = $0.50. All processed emails are charged — including syntax failures and SMTP unknowns — because protocol work still happens for each one.

Buyer

List hygiene before cold email campaigns — remove hard bounces before paying per-send
SaaS signup validation — flag disposable or nonexistent domains on sign-up forms
Lead enrichment pipelines — score inbound leads by email deliverability
CRM cleanup — bulk-audit stale contact lists without a third-party SaaS subscription
Compliance workflows — confirm addresses are reachable before GDPR/CAN-SPAM sends

Source

Protocol: DNS MX lookup + SMTP socket probe (no HTTP API)

MX lookup: dns.resolver.resolve(domain, "MX") — uses the system DNS resolver

SMTP probe flow:

Connect to port 25 of the first MX host
EHLO voiddo-verifier.apify.com
MAIL FROM:<> (null reverse-path per RFC 5321 §4.5.5)
RCPT TO:<email> — reads response code
QUIT — no mail is ever sent

Response codes: 250 → accepts, 550 → rejects, anything else → unknown.

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