Bulk Email Validator: Syntax, MX, Disposable & Role Check

Clean an email list before you send to it or pay for full verification. Paste addresses or link a CSV, and get one record per email with a low / medium / high risk score and the reasons: bad syntax, domains that do not exist or accept no mail, disposable (temporary) providers, role accounts like info@ or noreply@, free-mail addresses, and typos such as gmial.com, with a suggested fix. It also tells you who hosts each domain's mail (Google Workspace, Microsoft 365, Proofpoint...). $0.30 per 1,000 emails.

What this tool does not do. It does not connect to mail servers (SMTP), because outbound port 25 is blocked on Apify. So it cannot confirm that a specific mailbox exists and cannot detect catch-all domains. A low risk score means "no problems found in syntax and DNS", not "verified deliverable". Use it as a cheap pre-cleaning step; send the remaining low-risk addresses to an SMTP verifier only if you need mailbox-level certainty.

What does this email validator check?

Check	Output fields	How
Syntax (RFC 5321/5322, international addresses)	syntaxValid, syntaxError, normalized, localPart, hasPlusTag	email-validator library; reserved names such as .test and .invalid are rejected
Domain and MX	domain, hasMx, mxHosts, acceptsMail	Live DNS lookup, cached once per domain; detects non-existent domains, null MX (0 .) and A-record fallback
Mail provider	mailProvider	Read from MX hosts: Google Workspace, Microsoft 365, Gmail, Outlook.com, Yahoo, Zoho, Proofpoint, Mimecast, Cisco, Barracuda, IONOS, GoDaddy, Self-hosted and more
Disposable / temporary	isDisposable	10,000+ domains from the open-source disposable-email-domains list (CC0 public domain), including subdomains
Role accounts	isRole, isNoReply	140+ shared-mailbox names (info, sales, support, admin, hr, noreply...)
Free mail	isFreeMail	Gmail, Yahoo, Outlook/Hotmail, AOL, iCloud, Proton, GMX, Yandex, Mail.ru, ISPs and more; regional variants detected from MX
Typos	typoSuggestion, suggestedEmail	Misspellings of big providers (gmial.com -> gmail.com, hotmail.co -> hotmail.com) and of .com/.net/.org (acme.con -> acme.com)
Risk	riskScore, riskReasons	high, medium or low, with every reason listed

mailboxChecked is always false, so anyone reading your export knows no SMTP check was made.

How the risk score works

• high: invalid syntax, domain does not exist, null MX or no MX/A record (cannot receive mail), disposable provider, no-reply address, or a likely typo.
• medium: role account, no MX record but the domain has an A record (unusual setup), or the DNS lookup failed.
• low: none of the above. Free-mail addresses stay low but carry the reason "free email provider" so B2B users can filter them.

Who uses it?

• Marketers and email senders removing addresses that would bounce or hurt sender reputation before a campaign.
• Sales and lead-gen teams flagging free-mail, role and disposable addresses in scraped or purchased lead lists, and seeing which leads use Google Workspace or Microsoft 365.
• SaaS and e-commerce teams checking sign-up lists for throwaway addresses and typos (gmial.com) that cost you customers.
• Data teams cutting the cost of full SMTP verification by removing obvious junk first.

How to use it

1. Click Try for free (or Start).
2. Paste addresses into Email addresses, one per line, and/or add links to CSV or text files in Email list URLs (every address in the file is picked up).
3. Leave the checks on and press Start. Thousands of emails are checked per minute; domains are looked up once and reused.
4. Download the results as CSV, Excel or JSON. Filter riskScore = high to remove, review medium, and fix entries with a suggestedEmail.

Input example

{
  "emails": [
    "webmaster@python.org",
    "jane.doe@gmial.com",
    "test@mailinator.com",
    "john.smith@example.com",
    "sales@acme.con",
    "not-an-email@"
  ],
  "emailListUrls": [],
  "checkMx": true,
  "checkTypos": true,
  "deduplicate": true
}

Field	Description
emails	Addresses, one per line. Name <a@b.com> and mailto: forms are cleaned.
emailListUrls	Links to CSV/TXT files (e.g. a published Google Sheet CSV, a Dropbox or S3 link).
checkMx	Look up MX records (default on). Off = syntax, disposable, role, free-mail and typo checks only.
checkTypos	Suggest corrections for misspelled domains (default on).
deduplicate	Check each address once, case-insensitive (default on).
maxEmails	Upper limit per run.

Output example

A real record from the default run:

{
  "email": "jane.doe@gmial.com",
  "normalized": "jane.doe@gmial.com",
  "syntaxValid": true,
  "syntaxError": null,
  "localPart": "jane.doe",
  "domain": "gmial.com",
  "hasMx": false,
  "mxHosts": [],
  "acceptsMail": true,
  "mailProvider": null,
  "isDisposable": true,
  "isRole": false,
  "isNoReply": false,
  "isFreeMail": false,
  "hasPlusTag": false,
  "typoSuggestion": "gmail.com",
  "suggestedEmail": "jane.doe@gmail.com",
  "riskScore": "high",
  "riskReasons": [
    "disposable / temporary email provider",
    "domain looks like a typo of gmail.com",
    "no MX record; mail would fall back to the domain's A record"
  ],
  "mailboxChecked": false,
  "checkedAt": "2026-10-31T19:17:42Z"
}

The dataset view shows email, risk, reasons, domain, MX, provider and flags as a table.

How much does it cost?

$0.30 per 1,000 emails ($0.0003 per checked address), plus a $0.00005 start fee per run. Every input address produces one result and is charged once, including invalid ones; duplicates are removed for free when deduplicate is on.

You check	You pay
1,000 sign-ups	$0.30
25,000-address newsletter list	$7.50
200,000 scraped leads	$60.00

Full SMTP verifiers in the Apify Store typically charge about $0.89 to $1.50 per 1,000. Running this first and verifying only the low-risk remainder usually lowers the total bill.

Volume discounts on higher Apify plans. The prices above are for the Apify Free plan. On paid plans the per-result price drops automatically: about 15% lower on Bronze, 25% lower on Silver and 38% lower on Gold and above.

Use it via API, Make, Zapier, n8n or an AI agent

Apify API. Start a run and get the results back in one HTTP request (replace YOUR_API_TOKEN with the token from Apify Console > Settings > Integrations):

curl -X POST "https://api.apify.com/v2/acts/plotpointtech~bulk-email-validator/run-sync-get-dataset-items?token=YOUR_API_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{"emails": ["webmaster@python.org", "jane.doe@gmial.com"]}'

For large lists, start the run asynchronously and read the dataset when it finishes. Official apify-client libraries exist for Python and JavaScript; the API tab on this page has ready-made code.

No-code automation. Connect the tool to Make, Zapier, n8n, Google Sheets, HubSpot (via webhooks), Airtable or any webhook with Apify integrations, for example to check each new form sign-up.

AI agents (MCP). Give Claude, ChatGPT, Cursor, VS Code or any MCP-compatible agent direct access to this tool through the hosted Apify MCP server:

https://mcp.apify.com?tools=plotpointtech/bulk-email-validator

FAQ

Does it verify that a mailbox exists? No. Mailbox verification needs an SMTP conversation on port 25, which Apify blocks. The tool checks everything that can be known without it: syntax, the domain's DNS and MX setup, and known lists. An address can pass every check and still bounce if the mailbox was deleted.

Can it detect catch-all (accept-all) domains? No. Catch-all detection also needs SMTP. Note that many typo and disposable domains accept all mail, which is why those are scored high anyway.

How accurate is the disposable list? It is the widely used community-maintained disposable-email-domains list (CC0 1.0 public domain), bundled with the tool and updated when the tool is rebuilt. New throwaway services appear daily, so no list is complete. A domain whose MX points to Mailinator is also flagged.

Is it legal to validate emails? Yes. The tool only reads public DNS records and compares addresses against lists; it sends nothing to the addresses and contacts no mailbox. You remain responsible for having a lawful basis (for example under GDPR or CAN-SPAM) to hold and email the addresses you check.

How fast is it? In our tests 6,000 addresses across about 2,900 unique domains took under 30 seconds. Lists with many repeated domains (Gmail, Outlook) are faster because each domain is looked up only once.

Related tools from Plot Point Technologies

• Email & Contact Scraper: emails, phones and social links from company websites.
• WHOIS & Domain Lookup: registrar, expiry, DNS, email provider, SPF/DMARC and SSL for any domain list.
• Local Business Leads Scraper: local businesses with MX-checked emails and phones.
• Website Tech Stack Detector: CMS, analytics and 290+ technologies per site.

Plot Point Technologies is not affiliated with Google, Microsoft, Yahoo, Mailinator or the maintainers of the disposable-email-domains list.

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If this tool saved you time, we would be grateful for a short review on this page; it helps other people find it. If something did not work as expected, please open an issue on the Issues tab and we will look into it quickly.