# VerifyKit, $9 monthly: Email verification API

> Real SMTP verification, typo correction, and disposable detection in one API call. Stop fake signups at the door.

VerifyKit's email verification API on its Starter plan. It costs $1.80 per 1,000 emails. It returns 4 of the 6 key fields we check: Address, Deliverability, Confidence, Company.
Half of the 2,458 plans we rank by price cost $2.00 per 1,000 emails or less. This plan is cheaper than 53% of the 2,458 plans.
[treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) costs the least per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $26.95 per 1,000 emails when no provider answers.
[Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/149-monthly/llms.txt), [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) and [treg](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/verifykit/9-monthly
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://verifykit.io/pricing
- Request: `POST https://api.verifykit.io/v1/verify`
- API key: with the plan, on https://verifykit.io/pricing
- Its API docs: https://verifykit.io/docs#api-reference
- Sold by: VerifyKit (https://verifykit.io)
- Checked: 2026-10-28

## In the answer

- Completeness: 67%
- Address: ✓
- Deliverability: ✓
- Confidence: ✓
- Company: ✓

## Score

- Overall score: 0.0. We give it 0 overall because its Data score is 0.
- Price score: 48
- Data score: 0
- Cost to get started score: 90
- Bundle score: 0
- Performance score: 0. We could not measure how fast this provider answers a call, so we count it as 0.

## Price

- $ per 1,000 emails: $1.80
- Per: call
- Billing: monthly
- $ a month: $9

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $1.80

## Catch-all

- $ per 1,000: $1.80

## In their words

- Their pitch: Real SMTP verification, typo correction, and disposable detection in one API call. Stop fake signups at the door.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: You agree NOT to use our service to: Send spam or unsolicited emails: Do not validate emails for spamming purposes, Validate purchased or scraped lists: Only validate emails you have legitimate interest in, Circumvent rate limits: Do not create multiple accounts to bypass usage limits, Resell our service: Do not resell access to our API without written permission, Reverse engineer: Do not attempt to reverse engineer or decompile our service, Attack or harm: Do not attempt to harm, damage, or impair our infrastructure, Violate laws: Do not use the service for any illegal purposes, Infringe rights: Do not violate intellectual property or privacy rights, Abuse the service: Do not engage in activities that degrade service performance

## Plan

- Pay: $9
- You get: 5,000 results a month
- Enough for: 5,000 calls a month
- Expires: Monthly quotas reset on the 1st of each calendar month at 00:00 UTC

## Rate limit

- Per second: 2.5
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: skip_smtp
- Method: POST
- Path: /v1/verify

## About the plan

- Plan: Starter
- Who can get it: anyone aged 18 or over

## The 16 fields the plan's answer can hold

valid, email address, reachable, score, quality grade, disposable, role-based, free provider, MX valid, MX records, SMTP valid, SMTP state, full inbox, syntax valid, username, domain

## VerifyKit's plans (4)

- [VerifyKit, $9 monthly](https://datacircle.dev/validate-email-apis/verifykit/9-monthly/llms.txt): $1.80 per 1,000, 67% complete, live
- [VerifyKit, $19 monthly, Growth, POST /v1/verify](https://datacircle.dev/validate-email-apis/verifykit/19-monthly-growth-post-v1-verify/llms.txt): $1.267 per 1,000, 67% complete, live
- [VerifyKit, $49 monthly, Pro, POST /v1/verify](https://datacircle.dev/validate-email-apis/verifykit/49-monthly-pro-post-v1-verify/llms.txt): $0.98 per 1,000, 67% complete, live
- [VerifyKit, $249 monthly, Unlimited, POST /v1/verify](https://datacircle.dev/validate-email-apis/verifykit/249-monthly-unlimited-post-v1-verify/llms.txt): $0.05 per 1,000, 67% complete, live

## VerifyKit's calls (2)

- `POST /v1/verify`: [VerifyKit, $9 monthly](https://datacircle.dev/validate-email-apis/verifykit/9-monthly/llms.txt)
- `POST /v1/verify/bulk`: [VerifyKit, $19 monthly, Growth, POST /v1/verify/bulk](https://datacircle.dev/validate-email-apis/verifykit/19-monthly-growth-post-v1-verify-bulk/llms.txt)

## VerifyKit's APIs (1)

- [VerifyKit: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/verifykit/9-monthly/llms.txt)

## VerifyKit: email verification API alternatives

- [DeBounce, top-up from $45, 25K credits, GET /v1/, Single email validation](https://datacircle.dev/validate-email-apis/debounce/top-up-from-45-25k-credits-get-v1/llms.txt): $1.80 per 1,000, 50% complete, live
- [QuickEmailVerification, $900 pack, Persistent Credits, 500,000 credits, GET /v1/verify](https://datacircle.dev/validate-email-apis/quickemailverification/900-pack/llms.txt): $1.80 per 1,000, 50% complete, live
- [MailProbe, $90 pack](https://datacircle.dev/validate-email-apis/mailprobe/90-pack/llms.txt): $1.80 per 1,000, 50% complete, live
- [Clearout, $900 monthly, Pro 500K Credits, POST /email_verify/instant](https://datacircle.dev/validate-email-apis/clearout/900-monthly/llms.txt): $1.80 per 1,000, 50% 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 2026-10-28.

- https://verifykit.io
- https://verifykit.io/docs
- https://verifykit.io/legal/privacy
- https://verifykit.io/legal/terms
- https://verifykit.io/pricing