Datacircle

Agent Toolbox pricing: email verification API

Agent Toolbox's siteThis page as plain textEmail validation API: best verification providers comparedAgent Toolbox: email verification API alternatives

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50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$0.00per 1,000 emailsWe ran Agent Toolbox in our email verification API benchmark. We didn't score any Agent Toolbox plan.We rank 4,337 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. This plan and 65 others tie for the lowest price per 1,000 emails of the 4,337 plans. See the best free email verification API plan.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, Validemail.co and looot are the best email verification API providers in the Datacircle benchmark.
Type a number to see the cheapest Agent Toolbox plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: Free one of Agent Toolbox's 5 plans
Call: GET /free/email-verify one of Agent Toolbox's 2 calls for this API
API: Email verification API one of Agent Toolbox's 5 APIs

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 6 fields on our checklist. Address, Deliverability, Company.
  • Nothing to pay. Agent Toolbox limits how many calls you get but gives no number.
  • One call. You send email to GET /free/email-verify. The call returns whether the address takes mail.
  • Who can get it: anyone, with no sign-up or API key, limited per IP address. Keep data: no API terms. Use data: no API terms.

Agent Toolbox: email verification API alternatives

Agent Toolbox alternatives: other email verification API providers by price

We list other providers' plans closest to this plan in price per 1,000 emails.

This planAgent Toolbox, freepingutil, free API key, POST /v1/verifyValidemail.co, free, POST /api/v1/bulkMailTester Ninja, free, No tokenGiggal, free trial, POST /v1/verify-batch2s.io, free
$ per 1,000 emails$0.00$0.00$0.00$0.00$0.00$0.00
Completeness50%50%67%50%67%50%
Billingfreefreefreefreefreefree
Pay$0$0$0$0$0$0
Enough fornot published9,000 calls a month50 results300 calls a month1,000 resultsnot published
Freshnessunknown30 daysliveliveliveunknown
Who can get itanyone, with no sign-up or API key, limited per IP addressanyone who signs in with an email addressanyoneanyone at least 18 years old, or the age of majority in their jurisdictionanyone aged 18 or overanyone, with no wallet or payment, for one call per endpoint per hour (a request with ?trial=1 or the X-2s-Trial: 1 header)

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-09.

  1. agent-toolbox.zafermemon87.workers.dev
  2. agent-toolbox.zafermemon87.workers.dev/.well-known/x402
  3. agent-toolbox.zafermemon87.workers.dev/llms.txt
  4. agent-toolbox.zafermemon87.workers.dev/openapi.json
  5. api.cdp.coinbase.com/platform/v2/x402/discovery/resources

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
Not found
$ per 1,000$0.00
In their words
Their pitchCheck an email address: format, whether the domain exists and accepts mail (MX records), disposable providers, role accounts and free providers, with a valid / risky / invalid verdict. The mailbox itself is not probed.
Data
What it checksformat, mail servers, disposable domains, role addresses
Keep datano API terms
Use datano API terms
Plan
Pay$0
Rate limit
Batch1
Speed
Answerin the call
The call
You sendemail
MethodGET
Path/free/email-verify
About the plan
PlanFree
Who can get itanyone, with no sign-up or API key, limited per IP address
The 11 fields the plan's answer can hold

email, verdict, format ok, domain, mail servers, disposable, role account, free provider, reasons, mailbox checked, plain-text summary

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