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skink pricing: email verification API, POST /v1/bulk

skink's sitellms.txtEmail validation API: 180+ verification providers comparedskink: email verification API alternatives

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50% complete: 3 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 emailsIn our email verification API benchmark, the best plan from skink scores 45.6 out of 100. skink ranks 89th of 181 providers.This plan is free. We rank 3,753 plans for email verification APIs by price. Half the plans cost $1.98 per 1,000 emails or less.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.MailTester Ninja, Enrich.so and GetProspect are the best email verification API providers in the Datacircle benchmark.
Plan: Start here, free one of skink's 7 plans
Call: POST /v1/bulk one of skink's 2 calls
API: Email verification API skink's only API

About this item

  • Freshness. We don't know how fresh this plan's data is.
  • 3 of the 6 key fields we check. Address, Deliverability, Confidence.
  • Nothing to pay. You get 100 credits once, enough for 100 results. Calls stop once your credits run out. Credits never expire.
  • One call. You send source.emails or source.file_id to POST /v1/bulk. You set the Content-Type header to "application/json". You can also send callback_url, fast_fail and skip_catchall_probes. The call returns a job. You fetch the answer once the job is done. Or the provider sends the answer to your webhook.
  • Who can get it: with conditions. Keep data: no limit. Use data: with conditions.

skink: email verification API alternatives

skink alternatives: every email verification API provider ranked

The table starts with skink's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to skink's.

skink, $1,999 pack, Max, POST /v1/bulkZeroBounce, $23,988 yearly, ZeroBounce ONE annually, 1,000,000 credits a month, POST /v2/validatebatch1Lookup, $1,999 monthly, Enterprise, POST /bulk/jobsCloudmersive, $19.99 monthlySearlo, $29.99 pack
$ per 1,000 emails$1.999$1.999$1.999$1.999$1.999
Completeness50%83%67%33%50%
Billingpay firstyearlymonthlymonthlypay first
Pay$1,999$23,988$1,999$19.99$29.99
Enough for1,000,000 results1,000,000 results a month1,000,000 results a month10,000 calls a month15,000 calls
Freshnessunknownliveliveliveunknown
Who can get itbusiness customers only: the Service is offered on a business-to-business basis only and is not directed at consumers acting for personal, family, or household purposesanyone, for their internal business purposes only, not a resident of a country the US OFAC sanctions or on its restricted listsanyone with a business name and a working business email addresssmall businesses with fewer than 50 employeesanyone at least 18 years old

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. skink.dev/acceptable-use
  2. skink.dev/docs
  3. skink.dev/pricing
  4. skink.dev/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
Price
$ per 1,000 emails$0.00
Perresult
Billingfree
Aggregators
Aggregatorsnone
Charges
Repeat freenever
Also pays forfrom the same budget: Verify
Overage
Units caphard
Not found
$ per 1,000$0.00
Catch-all
$ per 1,000$0.00
In their words
Their pitchEvidence behind every verdict. Even the catch-alls.
Data
What it checksformat, mail servers, disposable domains, role addresses, mailbox
Keep datano limit
Use dataTo verify email addresses you have a lawful basis to process, including your own contact lists, opt-in subscribers, and legitimately-sourced sales prospects, a deliverable result does not constitute consent or permission to send email, and you hold your own lawful basis and consents under applicable law. You may not use the Service to: submit addresses obtained from an unlawful source, including illegally scraped, harvested, or purchased-without-rights lists, or through any other unlawful data-acquisition method, facilitate spam, phishing, credential-stuffing or other credential-based attacks, harassment, or any other unlawful activity, perform mass account-existence enumeration unrelated to assessing your own list's deliverability, resell or repackage raw verification results as a standalone address-enumeration or people-lookup service, circumvent rate limits, or create multiple accounts to exceed limits or abuse free-tier credits, attempt to circumvent a recipient mail provider's security, anti-abuse, or anti-spam controls through your use of the Service
Plan
Pay$0
You get100 credits
Enough for100 results, once
Expiresnever
Rate limit
Batch50,000
Speed
Answerby polling or webhook
The call
You sendone of source.emails or source.file_id, Content-Type header "application/json". Optional: callback_url, fast_fail, skip_catchall_probes
MethodPOST
Path/v1/bulk
About the plan
PlanStart here, free
Who can get itbusiness customers only: the Service is offered on a business-to-business basis only and is not directed at consumers acting for personal, family, or household purposes
The 17 fields the plan's answer can hold

email address, status, sub-status, confidence, did you mean, free, role, disposable, safe to send, accept all, risk score, risks, MX provider, recommendation, model version, processed at, duration

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