# Sealch, free, Free, POST /api/verify: Email verification API

> Sealch is an email verification service that runs the same live SMTP check as the premium tools — catch-all detection, 99.2% accuracy, and you're never charged for unknowns.

Sealch's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 1 of the 6 key fields we check: Deliverability.
The cheapest of the 1,712 plans we rank by price is [treg, top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt), at $0.00 per 1,000.

- This page: https://datacircle.dev/validate-email-apis/sealch/free-free-post-api-verify
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://sealch.com/pricing
- Its API docs: https://sealch.com/blog/verify-emails-clay-make-n8n
- Sold by: Sealch (https://sealch.com)
- Checked: 2026-10-25

## In the answer

- Completeness: 17%
- Deliverability: ✓

## Price

- $ per 1,000: $0.00
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Per: call
- Also pays for: from the same budget: Verify up to 50 emails · Find an address

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Sealch is an email verification service that runs the same live SMTP check as the premium tools — catch-all detection, 99.2% accuracy, and you're never charged for unknowns.

## Data

- Freshness: live
- Keep data: no limit
- Use data: use the Service only for lawful purposes. You must not: Use the Service to verify email addresses for spam, phishing, harassment, or any illegal communication, Attempt to circumvent plan limits through automated account creation or credential sharing across organizations, Resell, redistribute, or sublicense access to the Service or API without written permission, Reverse-engineer, decompile, or attempt to extract the source code of the Service, Use the Service to build a competing email verification product, Submit email addresses you do not have a legitimate business reason to verify

## Plan

- Pay: $0
- You get: 200 credits
- Enough for: 200 calls, once
- Expires: never

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 0.76 s

## The call

- You send: email, Content-Type header "application/json"
- Method: POST
- Path: /api/verify

## About the plan

- Plan: Free
- Who can get it: anyone

## The 7 fields the plan's answer can hold

reachability, mail provider, role account, disposable, credits used, credits limit, credits lifetime

## Sealch's plans (22)

- [Sealch, free, Free, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/free-free-post-api-verify/llms.txt): $0.00 per 1,000, 17% complete, live
- [Sealch, $15 pack, Pay as you go 10,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/15-pack-pay-as-you-go-10000-emails-post-api-verify/llms.txt): $1.50 per 1,000, 17% complete, live
- [Sealch, $27 pack, Pay as you go 25,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/27-pack-pay-as-you-go-25000-emails-post-api-verify/llms.txt): $1.08 per 1,000, 17% complete, live
- [Sealch, $37 pack, Pay as you go 50,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/37-pack-pay-as-you-go-50000-emails-post-api-verify/llms.txt): $0.74 per 1,000, 17% complete, live
- [Sealch, $49 pack, Pay as you go 100,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/49-pack-pay-as-you-go-100000-emails-post-api-verify/llms.txt): $0.49 per 1,000, 17% complete, live
- [Sealch, $109 pack, Pay as you go 250,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/109-pack-pay-as-you-go-250000-emails-post-api-verify/llms.txt): $0.436 per 1,000, 17% complete, live
- [Sealch, $199 pack, Pay as you go 500,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/199-pack-pay-as-you-go-500000-emails-post-api-verify/llms.txt): $0.398 per 1,000, 17% complete, live
- [Sealch, $349 pack, Pay as you go 1,000,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/349-pack-pay-as-you-go-1000000-emails-post-api-verify/llms.txt): $0.349 per 1,000, 17% complete, live
- [Sealch, $649 pack, Pay as you go 2,000,000 emails, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/649-pack-pay-as-you-go-2000000-emails-post-api-verify/llms.txt): $0.325 per 1,000, 17% complete, live
- [Sealch, $9 monthly, Monthly up to 10,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/9-monthly-monthly-up-to-10000-mo-post-api-verify/llms.txt): $0.90 per 1,000, 17% complete, live
- [Sealch, $25 monthly, Monthly up to 50,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/25-monthly-monthly-up-to-50000-mo-post-api-verify/llms.txt): $0.50 per 1,000, 17% complete, live
- [Sealch, $33 monthly, Monthly up to 100,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/33-monthly-monthly-up-to-100000-mo-post-api-verify/llms.txt): $0.33 per 1,000, 17% complete, live
- [Sealch, $79 monthly, Monthly up to 250,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/79-monthly-monthly-up-to-250000-mo-post-api-verify/llms.txt): $0.316 per 1,000, 17% complete, live
- [Sealch, $149 monthly, Monthly up to 500,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/149-monthly-monthly-up-to-500000-mo-post-api-verify/llms.txt): $0.298 per 1,000, 17% complete, live
- [Sealch, $269 monthly, Monthly up to 1,000,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/269-monthly-monthly-up-to-1000000-mo-post-api-verify/llms.txt): $0.269 per 1,000, 17% complete, live
- [Sealch, $86 yearly, Yearly up to 10,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/86-yearly-yearly-up-to-10000-mo-post-api-verify/llms.txt): $0.717 per 1,000, 17% complete, live
- [Sealch, $240 yearly, Yearly up to 50,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/240-yearly-yearly-up-to-50000-mo-post-api-verify/llms.txt): $0.40 per 1,000, 17% complete, live
- [Sealch, $317 yearly, Yearly up to 100,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/317-yearly-yearly-up-to-100000-mo-post-api-verify/llms.txt): $0.264 per 1,000, 17% complete, live
- [Sealch, $758 yearly, Yearly up to 250,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/758-yearly-yearly-up-to-250000-mo-post-api-verify/llms.txt): $0.253 per 1,000, 17% complete, live
- [Sealch, $1,430 yearly, Yearly up to 500,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/1430-yearly-yearly-up-to-500000-mo-post-api-verify/llms.txt): $0.238 per 1,000, 17% complete, live
- [Sealch, $2,582 yearly, Yearly up to 1,000,000 / mo, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/2582-yearly-yearly-up-to-1000000-mo-post-api-verify/llms.txt): $0.215 per 1,000, 17% complete, live
- [Sealch, contact us, Enterprise, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/contact-us-enterprise-post-api-verify/llms.txt): 17% complete, live

## Sealch's calls (2)

- `POST /api/verify`: [Sealch, free, Free, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/free-free-post-api-verify/llms.txt)
- `POST /api/verify/bulk`: [Sealch, free, Free, POST /api/verify/bulk](https://datacircle.dev/validate-email-apis/sealch/free/llms.txt)

## Sealch's APIs (2)

- [Sealch: email finder API pricing, 22 plans](https://datacircle.dev/find-email-apis/sealch/free/llms.txt)
- [Sealch: email verification API pricing, 22 plans, POST /api/verify](https://datacircle.dev/validate-email-apis/sealch/free-free-post-api-verify/llms.txt)

## Sealch: email verification API alternatives

- [VeriMails, $300 monthly, Agency, POST /api/verify/single](https://datacircle.dev/validate-email-apis/verimails/300-monthly-agency-post-api-verify-single/llms.txt): $0.20 per 1,000, 67% complete, live
- [MillionVerifier, $4,999 pack, 25,000,000 verification credits, GET /api/v3](https://datacircle.dev/validate-email-apis/millionverifier/4999-pack-25000000-verification-credits-get-api-v3/llms.txt): $0.20 per 1,000, 50% complete, live
- [VerifySwift, $2,499.99 monthly, Monthly Credits 12,000,000](https://datacircle.dev/validate-email-apis/verifyswift/2499-99-monthly-monthly-credits-12000000/llms.txt): $0.208 per 1,000, 50% complete, live
- [No2Bounce, $11,049 pack](https://datacircle.dev/validate-email-apis/no2bounce/11049-pack/llms.txt): $0.221 per 1,000, 0% complete, live

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-25.

- https://sealch.com/api
- https://sealch.com/blog/verify-emails-clay-make-n8n
- https://sealch.com/files/sealch-api-kit-v2.zip
- https://sealch.com/pricing
- https://sealch.com/privacy
- https://sealch.com/refunds
- https://sealch.com/terms