Bulk Email Validator – Syntax, MX, Disposable & Typos

Clean an email list before you send. For every address you get one JSON row with a verdict (deliverable, risky, undeliverable or invalid), the reason, the domain's live MX records, and flags for disposable domains, role addresses (info@, support@), free providers and likely typos with a corrected suggestion (someone@gmial.com → someone@gmail.com).

It checks syntax and the domain's DNS mail routing. It does not open SMTP connections to mailboxes (see Limits), so it is fast, deterministic and cheap.

What you get

Field	Meaning
verdict	deliverable, risky, undeliverable, invalid or unknown
reason	domain_not_found, no_mail_server, null_mx, disposable, possible_typo, role_address, invalid_local_part, ...
valid	Whether the domain can receive mail at all
mx	Up to 5 MX hosts with priority
disposable, role, freeProvider, plusTag	Flags
suggestion	Corrected address when the domain looks mistyped

Real output

Input: 8 addresses (one duplicate-by-case, one malformed). Real run on Apify:

email	verdict	reason
support@stripe.com	risky	role_address
jane@github.com	deliverable
sam@apify.com	deliverable
test@mailinator.com	risky	disposable
someone@gmial.com	risky	possible_typo (suggests someone@gmail.com)
nobody@this-domain-does-not-exist-siftwright.com	undeliverable	domain_not_found
bad@@x	invalid	invalid_local_part

7 of the 8 rows were charged (the malformed address was free).

Pricing

Pay per event: $0.80 per 1,000 emails ($0.0008 each) plus Apify's $0.00005 start event.

• Charged once per unique address that gets a definitive verdict.
• Free: invalid syntax, duplicates, and inconclusive DNS lookups (timeouts/SERVFAIL).
• Set a maximum cost per run and the Actor stops exactly at the limit.

How it compares

	This Actor	Typical SMTP-probe verifiers
Price per 1,000	$0.80	$0.85-$2.50 plus start fees on some
Detects disposable / role / typos	Yes	Varies
Mailbox-level check	No	Sometimes
Failed lookups free	Yes	Varies

Limits (honest)

• No mailbox-level verification. deliverable means the address is well-formed and its domain publishes mail routing. It cannot confirm that a specific inbox exists; many providers (Gmail, Microsoft 365) block or mask SMTP probes, and outbound port 25 is typically blocked on cloud hosts.
• The disposable-domain list is a hand-maintained best-effort list of several hundred well-known services, not an exhaustive database; new throwaway domains appear daily.
• Catch-all domains look deliverable.

Use it from code

from apify_client import ApifyClient
client = ApifyClient("<APIFY_TOKEN>")
run = client.actor("siftwright/email-validator-mx-disposable").call(run_input={"emails": ["jane@github.com", "someone@gmial.com"]})
for row in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(row["email"], row["verdict"], row["reason"])

curl -X POST "https://api.apify.com/v2/acts/siftwright~email-validator-mx-disposable/run-sync-get-dataset-items?token=<APIFY_TOKEN>" \
  -H "Content-Type: application/json" -d '{"emails":["jane@github.com","someone@gmial.com"]}'

Works with Apify's MCP server, so AI agents can call it as a tool.

FAQ

Why is support@stripe.com "risky"? Role addresses are shared inboxes: valid, but they rarely reach a person and hurt cold-email metrics. Do you store my list? No. Input and results live in your own Apify run storage.

Built by Siftwright. Questions: support@siftwright.com.