# ListKit, $47 pack, Credit pack, POST /verifications: Email verification API

> Verify one email address and get its verdict at once: deliverable, risky, undeliverable, catch_all or unknown, plus whether it is a free or role address.

ListKit's email verification API on its Credit pack plan. It costs $23.50 per 1,000 emails. ListKit's docs list 2 of the 6 key fields we check: Address, Deliverability.
We haven't run ListKit through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
Half of the 3,952 plans we rank by price cost $1.999 per 1,000 emails or less. This plan costs less per 1,000 emails than 6% of the 3,952 plans.
[treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) 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)](https://datacircle.dev/validate-email-apis/disify/9-monthly-starter-post-email/llms.txt) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.
[pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt), [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) and [Giggal](https://datacircle.dev/validate-email-apis/giggal/39-pack-50000-credits-post-v1-verify/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/listkit/47-pack-credit-pack-post-verifications
- [Email validation API: 200+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://docs.listkit.io/en/articles/17679401-can-i-buy-only-credits-or-a-smaller-plan?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://developer.listkit.io/v1/verifications`
- API key: with the plan, on https://docs.listkit.io/en/articles/17679401-can-i-buy-only-credits-or-a-smaller-plan?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://developer.listkit.io/docs/guides/verifications?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#verify-one-address
- Sold by: ListKit (https://listkit.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-06

## In the answer

- Completeness: 33%
- Address: ✓
- Deliverability: ✓

## Price

- $ per 1,000 emails: $23.50
- Per: call
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: 157 other calls · from the same budget: Create an order · Verify a list of email addresses · Upload a file of emails to verify · Find one person's verified work email · Start an enrichment job · Write a campaign sequence with AI · Add spintax to a campaign sequence

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $23.50

## Catch-all

- $ per 1,000: $23.50

## In their words

- Their pitch: Verify one email address and get its verdict at once: deliverable, risky, undeliverable, catch_all or unknown, plus whether it is a free or role address.

## Data

- Keep data: throughout the term of your subscription
- Use data: a non-exclusive, revocable, non-assignable and non-sublicensable license, throughout the term of your subscription to: (i) use the Services solely for your personal and/or internal business purposes, and (ii) store, print or make a copy of Output Data solely for your personal or internal business purposes. [...] You therefore may not use the Services, including any data, to create any derivative work, service or product, on your own or on behalf of any other organization, and you may not resell or re-license the data in any manner or form.

## Plan

- Pay: $47
- You get: 2,000 credits
- Enough for: 2,000 calls
- Expires: 60 days after purchase

## Rate limit

- Per second: 0.17
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email, Idempotency-Key header
- Method: POST
- Path: /verifications

## About the plan

- Plan: Credit pack
- Who can get it: accounts with a Bundle

## The 5 fields the plan's answer can hold

email, result, sub-result, free, role

## ListKit's plans (8)

- [ListKit, $47 pack, Credit pack, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/47-pack-credit-pack-post-verifications/llms.txt): $23.50 per 1,000, 33% complete
- [ListKit, $597 monthly, Full Cold Email Stack, 1,000 emails a day, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/597-monthly-full-cold-email-stack-1000-emails-a-day-post-verifications/llms.txt): $59.70 per 1,000, 33% complete
- [ListKit, $1,194 monthly, Full Cold Email Stack, 2,000 emails a day, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/1194-monthly-full-cold-email-stack-2000-emails-a-day-post-verifications/llms.txt): $59.70 per 1,000, 33% complete
- [ListKit, $1,791 monthly, Full Cold Email Stack, 3,000 emails a day, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/1791-monthly-full-cold-email-stack-3000-emails-a-day-post-verifications/llms.txt): $59.70 per 1,000, 33% complete
- [ListKit, $2,985 monthly, Full Cold Email Stack, 5,000 emails a day, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/2985-monthly-full-cold-email-stack-5000-emails-a-day-post-verifications/llms.txt): $59.70 per 1,000, 33% complete
- [ListKit, $5,970 monthly, Full Cold Email Stack, 10,000 emails a day, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/5970-monthly-full-cold-email-stack-10000-emails-a-day-post-verifications/llms.txt): $59.70 per 1,000, 33% complete
- [ListKit, $3,223.80 half-yearly, Full Cold Email Stack, 1,000 emails a day, every 6 months, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/3223-80-half-yearly-full-cold-email-stack-1000-emails-a-day-every-6-months-post-verifications/llms.txt): $53.73 per 1,000, 33% complete
- [ListKit, $6,089.40 yearly, Full Cold Email Stack, 1,000 emails a day, every year, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/6089-40-yearly-full-cold-email-stack-1000-emails-a-day-every-year-post-verifications/llms.txt): $50.745 per 1,000, 33% complete

## ListKit's calls for this API (2)

- `POST /verifications/lists`: [ListKit, $47 pack, Credit pack, POST /verifications/lists](https://datacircle.dev/validate-email-apis/listkit/47-pack-credit-pack-post-verifications-lists/llms.txt)
- `POST /verifications`: [ListKit, $47 pack, Credit pack, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/47-pack-credit-pack-post-verifications/llms.txt)

## ListKit's APIs (4)

- [ListKit: company discovery API pricing, 8 plans](https://datacircle.dev/company-discovery-apis/listkit/47-pack/llms.txt)
- [ListKit: email finder API pricing, 8 plans](https://datacircle.dev/find-email-apis/listkit/47-pack/llms.txt)
- [ListKit: people search API pricing, 8 plans, POST /orders](https://datacircle.dev/people-search-apis/listkit/47-pack-credit-pack-post-orders/llms.txt)
- [ListKit: people search API pricing, 8 plans, POST /search/people](https://datacircle.dev/people-search-apis/listkit/47-pack-credit-pack-post-search-people/llms.txt)
- [ListKit: email verification API pricing, 8 plans, POST /verifications](https://datacircle.dev/validate-email-apis/listkit/47-pack-credit-pack-post-verifications/llms.txt)

## ListKit: email verification API alternatives

- [TrekMail, $279 yearly, Agency, POST /verify, Verify one address (quick)](https://datacircle.dev/validate-email-apis/trekmail/279-yearly-agency-post-verify-verify-one-address-quick/llms.txt): $23.25 per 1,000, 50% complete, stored
- [Scrubby, $47 monthly, Starter, POST /validate_bulk_emails/deep/](https://datacircle.dev/validate-email-apis/scrubby/47-monthly-starter-post-validate-bulk-emails-deep/llms.txt): $23.50 per 1,000, 33% complete, live
- [Postcoder, £296 monthly](https://datacircle.dev/validate-email-apis/postcoder/296-monthly/llms.txt): $23.683 per 1,000, 33% complete, live
- [SellHack, $720 yearly](https://datacircle.dev/validate-email-apis/sellhack/720-yearly/llms.txt): $24.00 per 1,000, 17% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-06.

- https://developer.listkit.io/docs/guides/limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developer.listkit.io/docs/guides/verifications?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developer.listkit.io/docs/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://developer.listkit.io/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.listkit.io/en/articles/15926202-what-s-included-in-a-bundle-and-how-much-does-it-cost?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.listkit.io/en/articles/16023743-how-do-listkit-credits-work?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.listkit.io/en/articles/17679401-can-i-buy-only-credits-or-a-smaller-plan?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://listkit.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://listkit.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing