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Check Mail pricing: email verification API

Check Mail's sitellms.txtBest email verification API in 2026: providers comparedCheck Mail: email verification API alternatives

Is Check Mail yours? Write to us about this page. We invite selected tool providers to our WhatsApp group.

50% complete: 3 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 emailsWe rank 3,214 plans by price. treg's top-up from $10 costs the least per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $68.365 per 1,000 emails when no provider answers.Disify's $9 monthly plan (/email) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.MailTester Ninja, Signaliz and Enrich.so are the best email verification API providers in our benchmark.
Plan: Free forever one of Check Mail's 3 plans
Call: POST /v2/ Check Mail's only call
API: Email verification API Check Mail's only API

About this item

  • Stored. Check Mail may answer from Check Mail's stored data instead of asking the mail server. Check Mail doesn't say how old the data is.
  • 3 of the 6 key fields we check. Address, Deliverability, Company.
  • Nothing to pay. You get 1,000 requests a month. Calls stop once your requests run out.
  • One call. You send email or domain to POST /v2/. The call returns whether the address takes mail.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

Check Mail: email verification API alternatives

Check Mail alternatives: every email verification API provider ranked

The table starts with Check Mail's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to Check Mail's. Each plan in the table gives stored data.

Check Mail, $99 monthlyElastic Email, $999 monthly, Email API Pro (5,000,000 emails/month), POST /verifications/filesSignaliz, top-upStopReg, $100 monthlyUserCheck, $100 monthly, Pro 500k, POST /v1/gates/{gate_id}/decisions, Decision endpoint
$ per 1,000 emails$0.198$0.20$0.20$0.20$0.20
Completeness50%50%33%50%50%
Billingmonthlymonthlypay firstmonthlymonthly
Pay$99$999any amount$100$100
Enough for500,000 calls a month5,000,000 results a monthas many as you pay for500,000 calls a month500,000 calls a month
Freshnessstoredstoredstoredstoredstored
Who can get itanyoneanyone at least the age of majority in their jurisdiction, with a registered accountanyoneanyoneanyone aged 16 or over, or the age of consent in their jurisdiction

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

  1. check-mail.org
  2. check-mail.org/free-email-validation-api
  3. check-mail.org/pricing
  4. check-mail.org/terms
  5. docs.check-mail.org/api-and-authentication
  6. docs.check-mail.org/faq
  7. docs.check-mail.org/json-response

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Address
  • Deliverability
  • Confidence, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000 emails$0.00
Percall
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays fornothing else
Overage
Units caphard
Not found
$ per 1,000$0.00
In their words
Their pitchCheck-Mail.org is a free email validation API that helps developers verify email addresses and block disposable or temporary emails in real-time.
Data
Freshnessstored
What it checksformat, mail servers, disposable domains, role addresses
Keep datano limit
Use dataYou agree not to use the Service for any unlawful purpose or in any way that could damage, disable, or impair the Service. Specifically, you agree not to: Abuse the Service or use it in a way that negatively impacts other users, Attempt to gain unauthorized access to any part of the Service, Use automated scripts or bots to interact with the Service in an abusive manner, Use the Service for illegal activities, Circumvent any limitations or restrictions placed on your account, Create multiple accounts to bypass free tier limitations, Resell or redistribute the Service without authorization
Plan
Pay$0
You get1,000 requests a month
Enough for1,000 calls a month
Rate limit
Batch1
Speed
Answerin the call
The call
You sendone of email or domain
MethodPOST
Path/v2/
About the plan
PlanFree forever
Who can get itanyone
The 31 fields the plan's answer can hold

valid, block, domain, base domain, text, reason, risk, disposable, email forwarder, public free provider, public premium provider, business provider, ISP email, email API, web hosting email, self-hosted, parked, role-based email, MX host, MX IP, MX info, MX fallback, MX hosts, MX IPs, MX priorities, email provider, disposable provider, possible typo, domain age days, domain created at, block status changed at

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