Datacircle

Unspam pricing: email verification API, POST /email-verification/list-checks

Unspam's siteThis page as plain textEmail validation API: 210+ verification providers comparedUnspam: email verification API alternatives

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

50% complete: 3 of the 6 fields on our checklistSee the 6 fields
$6.40per 1,000 emailsWe haven't run Unspam through our email verification API benchmark yet.Half of the 4,041 plans we rank by price cost $1.999 per 1,000 emails or less. This plan costs less per 1,000 emails than 17% of the 4,041 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. StableEnrich's pay-as-you-go plan costs the least for 10,000 emails a month: $0.05.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, looot and MailTester Ninja are the best email verification API providers in the Datacircle benchmark.
Type a number to see the cheapest Unspam plan for that many emails. The table below then sorts the other plans by what each costs.
Plan: Custom plan, first 1,000 verifications a month one of Unspam's 8 plans
Call: POST /email-verification/list-checks one of Unspam's 2 calls
API: Email verification API Unspam's only API

About this item

  • Live. Unspam checks the email when you call the API.
  • 3 of the 6 fields on our checklist. Address, Deliverability, Company.
  • A monthly subscription. You pay this price for each of the first 1,000 results each month. You pay at least $5 a month.
  • One call. You send emails to POST /email-verification/list-checks. You can also send name. The call returns a job. You fetch the answer once the job is done.
  • Who can get it: anyone above the age of 18. Keep data: no limit. Use data: with conditions.

Unspam: email verification API alternatives

Unspam alternatives: other email verification API providers by price

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

This planUnspam, $5 monthly, Custom plan, first 1,000 verifications a month, POST /email-verification/list-checksAnymail Finder, $384 yearlySafetyMails, $12.80 monthlyGamalogic, $16 pack, Pay As You Go, 2,500 Credits, POST /batchemailvrfOppora, $96 quarterly, Pro, POST /email/verify, Verify email (advanced mode)
$ per 1,000 emails$6.40$6.40$6.40$6.40$6.40
Completeness50%17%33%17%33%
Billingmonthlyyearlymonthlypay firstquarterly
Pay$5$384$12.80$16$96
Enough foras many as you pay for60,000 calls a year2,000 calls a month2,500 results5,000 calls a month
Freshnesslivelivelivelivelive
Who can get itanyone above the age of 18businesses onlyanyone 18 or of legal age in their jurisdiction, individuals and legal entitiesanyone 18 or over, with authority to bind their organization when using it for oneanyone

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-07.

  1. api.unspam.email/ext-api/openapi.json
  2. unspam.email/api
  3. unspam.email/api/internal/custom-plan/config
  4. unspam.email/email-verification-api
  5. unspam.email/email-verifier
  6. unspam.email/pricing
  7. unspam.email/privacy
  8. unspam.email/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, not in the answer
  • Name, not in the answer
  • Place, not in the answer
  • Company
Price
$ per 1,000 emails$6.40
Perresult
Billingmonthly
$ a month$5
Aggregators
Aggregatorsnone
Charges
Also pays forfrom the same budget: Verify email
Overage
Add-ons1,000 credits once for $8 ($8.00 per 1,000)
Not found
$ per 1,000$0.00
Catch-all
$ per 1,000$6.40
In their words
Their pitchVerify one address or a list of up to 100,000 over REST, and read back a status, a reason and an action for each, paying only for definitive answers.
Data
Freshnesslive
What it checksformat, mail servers, disposable domains, role addresses, mailbox
Keep datano limit
Use dataIf you are on the Custom plan, or on a White Label plan we issued to you, you may integrate the Service, including the API and the MCP server, into your own products and services, and you may offer and resell the results to your own clients under your own brand, without attribution to Unspam. You remain responsible for how your clients use the results and for their compliance with these Terms, and you must keep your API tokens confidential.
Plan
Pay$5
You getfrom the 1st result a month
Expiresthe monthly allowance resets on the billing anniversary
Rate limit
Per second1.67
Batch100,000
Speed
Answerby polling
The call
You sendemails. Optional: name
MethodPOST
Path/email-verification/list-checks
About the plan
PlanCustom plan, first 1,000 verifications a month
Who can get itanyone above the age of 18
The 19 fields the plan's answer can hold

email address, status, reason, action, flags, did you mean, domain, mail provider, MX records, MX accepts mail, SMTP connected, mailbox accepts, catch-all, full inbox, disabled, disposable, role, free provider, verified at

Best GTM APIs