Datacircle

InboxPolicy pricing: email verification API, POST /v1/decide

InboxPolicy's sitellms.txtEmail validation API: 190+ verification providers comparedInboxPolicy: email verification API alternatives

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50% complete: 3 of the 6 key fields we checkSee the 6 fields
$10.00per 1,000 emailsIn our email verification API benchmark, this plan scores 42.5 out of 100. InboxPolicy ranks 65th of 197 providers.Half of the 3,886 plans we rank by price cost $1.998 per 1,000 emails or less. This plan costs less per 1,000 emails than 9% of the 3,886 plans.treg's top-up from $10 is the cheapest paid plan 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.pingutil, MailTester Ninja and Giggal are the best email verification API providers in the Datacircle benchmark.
Type a number to see the cheapest InboxPolicy plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: Pay-per-call (x402) one of InboxPolicy's 7 plans
Call: POST /v1/decide one of InboxPolicy's 3 calls
API: Email verification API InboxPolicy's only API

About this item

  • A copy at most 72 hours old. InboxPolicy may answer from InboxPolicy's stored data instead of asking the mail server.
  • 3 of the 6 key fields we check. Address, Deliverability, Confidence.
  • Nothing to buy first. You pay per call for 1 credit, enough for 1 call.
  • One call. You send email to POST /v1/decide. You can also send strictness and force_refresh. The call returns whether the address takes mail.
  • Anyone can get it. Keep data: no limit. Use data: with conditions.

InboxPolicy: email verification API alternatives

InboxPolicy alternatives: every email verification API provider ranked

We list other providers' plans closest to this plan in price per 1,000 emails. Each plan in the table gives live data or data at most a week old.

This planInboxPolicy, pay as you go, Pay-per-call (x402), POST /v1/decideCatch-all Verifier, $25 pack, 2,500 Credits, POST /api/v1/verify/singleClearout, $1,000 pack, 500,000 credits, POST /email_verify/instant, Instant Verify, fullMailerCheck, top-up from $10, Pay as you go, 1,000 credits, POST /check/singleMailcheck.co, $10 monthly, Pro, POST /v1/singleEmail:checkAmazon SES, pay as you go
$ per 1,000 emails$10.00$10.00$10.00$10.00$10.00$10.00
Completeness50%33%50%17%33%33%
Billingpay as you gopay firstpay firstpay firstmonthlypay as you go
Payper call$25$1,000$10$10monthly
Enough for1 call2,500 calls100,000 calls1,000 calls1,000 calls a monthas many as you pay for
Freshness72 hourslivelivelivelivelive
Who can get itanyoneanyonenot new usersanyone who is at least 18, uses it for their trade, business, craft or profession, and is not registered in a country or region sanctioned by the United States, United Kingdom, European Union or United Nationsanyone 18 or over (a minor needs a parent's or guardian's permission)anyone with an AWS account

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-05.

  1. api.inboxpolicy.com/openapi.json
  2. inboxpolicy.com
  3. inboxpolicy.com/docs
  4. inboxpolicy.com/free-plan
  5. inboxpolicy.com/guides/email-verification-for-developers
  6. inboxpolicy.com/guides/handle-review-avoid-signup
  7. inboxpolicy.com/guides/langchain-email-verification
  8. inboxpolicy.com/llms.txt
  9. inboxpolicy.com/pricing
  10. inboxpolicy.com/privacy
  11. inboxpolicy.com/terms

Product details

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

  • Address
  • Deliverability
  • Confidence
  • Name, not in the answer
  • Place, not in the answer
  • Company, not in the answer
Score
Overall score42.5
Price score5
Accuracy score67
Cost to get started score100
Bundle score0
Performance score78
Price
$ per 1,000 emails$10.00
Percall
Billingpay as you go
Aggregators
Aggregatorsnone
Charges
Repeat free72 hours
Also pays fornothing else
Not found
$ per 1,000$10.00
Catch-all
$ per 1,000$10.00
In their words
Their pitchOne API call answers the question your agent is actually asking: send, review, or avoid — with confidence, evidence, and honest unknowns.
Data
Freshness72 hours
What it checksformat, mail servers, disposable domains, role addresses, mailbox
Keep datano limit
Use dataVerify addresses you have a lawful basis to process. You are the data controller for lists you submit, we process them solely to produce your results. Prohibited: using the service to enable unsolicited bulk email in violation of applicable law (CAN-SPAM, GDPR, PECR, etc.), verifying harvested or scraped lists for spam, probing our infrastructure, or reselling raw results.
Plan
Payper call
You get1 credit
Enough for1 call
Rate limit
Batch1
Speed
Answerin the call
Median0.53 s
The call
You sendemail. Optional: strictness, force_refresh
MethodPOST
Path/v1/decide
About the plan
PlanPay-per-call (x402)
Who can get itanyone
The 14 fields the plan's answer can hold

request ID, email address, action, reason, confidence, status, retry at, catch-all, disposable, free, role account, from cache, credits charged, billable

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