# SMTP.BZ, top-up: Email verification API

> Проверка email-адресов на существование, отправляйте рассылки реальным получателям

SMTP.BZ's Email validation plan for the email verification API costs $0.716 per 1,000 emails. We check each provider's docs for 6 fields. SMTP.BZ's docs list 1: Deliverability.
₽60.00 per 1,000 emails is $0.716 at the Bank of Russia's rate of $0.011939 for ₽1.
We haven't run SMTP.BZ through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
We rank 4,767 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. This plan costs less per 1,000 emails than 79% of the 4,767 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. [StableEnrich's pay-as-you-go plan](https://datacircle.dev/validate-email-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-validate-emails/llms.txt) costs the least for 10,000 emails a month: $0.05.
[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, and costs less up front than treg's top-up from $10.
[Validemail.co](https://datacircle.dev/validate-email-apis/validemail-co/9-90-monthly-9-90-month-get-api-v1-validate/llms.txt), [pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt) and [looot](https://datacircle.dev/validate-email-apis/looot/top-up/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/smtp-bz/top-up
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://smtp.bz/price?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://api.smtp.bz/v1/check/email/{email}`
- API key: with the plan, on https://smtp.bz/price?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.smtp.bz/ui/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#/Validate/getValidate
- Sold by: SMTP.BZ (https://smtp.bz?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

- Completeness: 17%
- Deliverability: ✓

## Price

- $ per 1,000 emails: $0.716
- Per: call
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## In their words

- Their pitch: Проверка email-адресов на существование, отправляйте рассылки реальным получателям

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, mailbox
- Keep data: no API terms
- Use data: no API terms

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email
- Method: GET
- Path: /check/email/{email}

## About the plan

- Plan: Email validation
- Who can get it: anyone who registers an account

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

status, syntax, MX record, SMTP connection, alias, disposable, free

## SMTP.BZ's plans (1)

- [SMTP.BZ, top-up](https://datacircle.dev/validate-email-apis/smtp-bz/top-up/llms.txt): $0.716 per 1,000, 17% complete, live

## SMTP.BZ's calls (1)

- `GET /check/email/{email}`: [SMTP.BZ, top-up](https://datacircle.dev/validate-email-apis/smtp-bz/top-up/llms.txt)

## SMTP.BZ's APIs (1)

- [SMTP.BZ Email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/smtp-bz/top-up/llms.txt)

## SMTP.BZ: email verification API alternatives

[SMTP.BZ alternatives: other email verification API providers by price](https://datacircle.dev/smtp-bz-alternatives.txt)

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

- [Proofy, $179 pack, Pay-As-You-Go, 250,000 credits, GET /verify/single](https://datacircle.dev/validate-email-apis/proofy/179-pack-pay-as-you-go-250000-credits-get-verify-single/llms.txt): $0.716 per 1,000, 33% 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
- [WarmySender, $158 pack, 220,000 verification credits, POST /verification/batches](https://datacircle.dev/validate-email-apis/warmysender/158-pack-220000-verification-credits-post-verification-batches/llms.txt): $0.718 per 1,000, 33% complete, live
- [Mailercloud, $4,310 yearly, Email Verifier Plan – 500K (yearly), POST /verifyEmail](https://datacircle.dev/validate-email-apis/mailercloud/4310-yearly-email-verifier-plan-500k-yearly-post-verifyemail/llms.txt): $0.718 per 1,000, 67% 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 2026-11-08.

- https://docs.smtp.bz/swagger.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.smtp.bz/ui/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://smtp.bz/faq?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://smtp.bz/features/validator?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://smtp.bz/notes?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://smtp.bz/price?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://validate.smtp.bz/en?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing