# Unisender Go, free: Email verification API

> Методы проверки email адресов. Проверка адреса электронной почты предоставляет подробную информацию о работоспособности email. Это позволит исключить из отправки несуществующие email, снизить показатель жалоб, очистить список подписчиков и в конечном итоге улучшить вашу репутацию как отправителя.

Unisender Go's email verification API on its "Free, no tariff" plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Company.
We rank 3,215 plans by price. [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.
[MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt), [Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/499-monthly/llms.txt) and [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/unisender-go/free
- [Best email verification API in 2026: providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://go.unisender.ru/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#prices
- Request: `POST https://goapi.unisender.ru/ru/transactional/api/v1/email-validation/single.json`
- API key: with the plan, on https://go.unisender.ru/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#prices
- Its API docs: https://godocs.unisender.ru/web-api-ref?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#email-validation-single
- Sold by: Unisender Go (https://go.unisender.ru?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-03

## In the answer

- Completeness: 50%
- Address: ✓
- Deliverability: ✓
- Company: ✓

## Price

- $ per 1,000 emails: $0.00
- Per: call
- Billing: free

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Методы проверки email адресов. Проверка адреса электронной почты предоставляет подробную информацию о работоспособности email. Это позволит исключить из отправки несуществующие email, снизить показатель жалоб, очистить список подписчиков и в конечном итоге улучшить вашу репутацию как отправителя.

## Data

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

## Plan

- Pay: $0
- You get: 5 requests a month
- Enough for: 5 calls a month

## Rate limit

- Batch: 1

## Speed

- Answer: in the call
- Median: 2.38 s

## The call

- You send: email
- Method: POST
- Path: /ru/transactional/api/v1/email-validation/single.json

## About the plan

- Plan: Free, no tariff
- Who can get it: anyone with a new account, before a tariff is paid

## The 11 fields the plan's answer can hold

status, email address, result, cause, validity, local part, domain, MX found, MX record, did you mean, processed at

## Unisender Go's plans (120)

- [Unisender Go, free](https://datacircle.dev/validate-email-apis/unisender-go/free/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽800 monthly, By card, 6,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/800-monthly-by-card-6000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽1,200 monthly, By card, 10,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/1200-monthly-by-card-10000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽2,750 monthly, By card, 50,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/2750-monthly-by-card-50000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽5,000 monthly, By card, 100,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/5000-monthly-by-card-100000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽6,000 monthly, By invoice, monthly postpay, 100,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/6000-monthly-by-invoice-monthly-postpay-100000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽7,700 monthly, By card, 200,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/7700-monthly-by-card-200000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽9,000 monthly, By card, 300,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/9000-monthly-by-card-300000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽9,000 monthly, By invoice, monthly postpay, 200,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/9000-monthly-by-invoice-monthly-postpay-200000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽12,000 monthly, By card, 400,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/12000-monthly-by-card-400000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽12,000 monthly, By invoice, monthly postpay, 300,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/12000-monthly-by-invoice-monthly-postpay-300000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽14,000 monthly, By card, 500,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/14000-monthly-by-card-500000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽16,000 monthly, By card, 600,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/16000-monthly-by-card-600000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽17,500 monthly, By invoice, monthly postpay, 500,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/17500-monthly-by-invoice-monthly-postpay-500000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽18,000 monthly, By card, 700,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/18000-monthly-by-card-700000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽21,000 monthly, By card, 800,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/21000-monthly-by-card-800000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽21,000 monthly, By invoice, monthly postpay, 700,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/21000-monthly-by-invoice-monthly-postpay-700000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽23,000 monthly, By card, 900,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/23000-monthly-by-card-900000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽25,000 monthly, By card, 1,000,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/25000-monthly-by-card-1000000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽28,000 monthly, By invoice, monthly postpay, 1,000,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/28000-monthly-by-invoice-monthly-postpay-1000000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽33,500 monthly, By card, 1,500,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/33500-monthly-by-card-1500000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽37,500 monthly, By invoice, monthly postpay, 1,500,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/37500-monthly-by-invoice-monthly-postpay-1500000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽40,000 monthly, By card, 2,000,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/40000-monthly-by-card-2000000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽44,000 monthly, By invoice, monthly postpay, 2,000,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/44000-monthly-by-invoice-monthly-postpay-2000000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽47,500 monthly, By card, 2,500,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/47500-monthly-by-card-2500000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽50,000 monthly, By invoice, monthly postpay, 2,500,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/50000-monthly-by-invoice-monthly-postpay-2500000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽54,000 monthly, By card, 3,000,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/54000-monthly-by-card-3000000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽57,000 monthly, By invoice, monthly postpay, 3,000,000 emails a month, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/57000-monthly-by-invoice-monthly-postpay-3000000-emails-a-month-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽800 monthly, By card, 6,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/800-monthly-by-card-6000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽1,200 monthly, By card, 10,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/1200-monthly-by-card-10000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽2,750 monthly, By card, 50,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/2750-monthly-by-card-50000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽5,000 monthly, By card, 100,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/5000-monthly-by-card-100000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽6,000 monthly, By invoice, monthly postpay, 100,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/6000-monthly-by-invoice-monthly-postpay-100000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽7,700 monthly, By card, 200,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/7700-monthly-by-card-200000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽9,000 monthly, By card, 300,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/9000-monthly-by-card-300000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽9,000 monthly, By invoice, monthly postpay, 200,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/9000-monthly-by-invoice-monthly-postpay-200000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽12,000 monthly, By card, 400,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/12000-monthly-by-card-400000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽12,000 monthly, By invoice, monthly postpay, 300,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/12000-monthly-by-invoice-monthly-postpay-300000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽14,000 monthly, By card, 500,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/14000-monthly-by-card-500000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽16,000 monthly, By card, 600,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/16000-monthly-by-card-600000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽17,500 monthly, By invoice, monthly postpay, 500,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/17500-monthly-by-invoice-monthly-postpay-500000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽18,000 monthly, By card, 700,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/18000-monthly-by-card-700000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽21,000 monthly, By card, 800,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/21000-monthly-by-card-800000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽21,000 monthly, By invoice, monthly postpay, 700,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/21000-monthly-by-invoice-monthly-postpay-700000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽23,000 monthly, By card, 900,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/23000-monthly-by-card-900000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽25,000 monthly, By card, 1,000,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/25000-monthly-by-card-1000000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽28,000 monthly, By invoice, monthly postpay, 1,000,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/28000-monthly-by-invoice-monthly-postpay-1000000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽33,500 monthly, By card, 1,500,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/33500-monthly-by-card-1500000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽37,500 monthly, By invoice, monthly postpay, 1,500,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/37500-monthly-by-invoice-monthly-postpay-1500000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽40,000 monthly, By card, 2,000,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/40000-monthly-by-card-2000000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽44,000 monthly, By invoice, monthly postpay, 2,000,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/44000-monthly-by-invoice-monthly-postpay-2000000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽47,500 monthly, By card, 2,500,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/47500-monthly-by-card-2500000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽50,000 monthly, By invoice, monthly postpay, 2,500,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/50000-monthly-by-invoice-monthly-postpay-2500000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽54,000 monthly, By card, 3,000,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/54000-monthly-by-card-3000000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽57,000 monthly, By invoice, monthly postpay, 3,000,000 emails a month, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/57000-monthly-by-invoice-monthly-postpay-3000000-emails-a-month-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽17,100 quarterly, By invoice, 3 months prepaid, 300,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/17100-quarterly-by-invoice-3-months-prepaid-300000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽25,650 quarterly, By invoice, 3 months prepaid, 600,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/25650-quarterly-by-invoice-3-months-prepaid-600000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽34,200 quarterly, By invoice, 3 months prepaid, 900,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/34200-quarterly-by-invoice-3-months-prepaid-900000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽49,875 quarterly, By invoice, 3 months prepaid, 1,500,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/49875-quarterly-by-invoice-3-months-prepaid-1500000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽59,850 quarterly, By invoice, 3 months prepaid, 2,100,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/59850-quarterly-by-invoice-3-months-prepaid-2100000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽79,800 quarterly, By invoice, 3 months prepaid, 3,000,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/79800-quarterly-by-invoice-3-months-prepaid-3000000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽106,875 quarterly, By invoice, 3 months prepaid, 4,500,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/106875-quarterly-by-invoice-3-months-prepaid-4500000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽125,400 quarterly, By invoice, 3 months prepaid, 6,000,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/125400-quarterly-by-invoice-3-months-prepaid-6000000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽142,500 quarterly, By invoice, 3 months prepaid, 7,500,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/142500-quarterly-by-invoice-3-months-prepaid-7500000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽162,450 quarterly, By invoice, 3 months prepaid, 9,000,000 emails in 3 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/162450-quarterly-by-invoice-3-months-prepaid-9000000-emails-in-3-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽17,100 quarterly, By invoice, 3 months prepaid, 300,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/17100-quarterly-by-invoice-3-months-prepaid-300000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽25,650 quarterly, By invoice, 3 months prepaid, 600,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/25650-quarterly-by-invoice-3-months-prepaid-600000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽34,200 quarterly, By invoice, 3 months prepaid, 900,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/34200-quarterly-by-invoice-3-months-prepaid-900000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽49,875 quarterly, By invoice, 3 months prepaid, 1,500,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/49875-quarterly-by-invoice-3-months-prepaid-1500000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽59,850 quarterly, By invoice, 3 months prepaid, 2,100,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/59850-quarterly-by-invoice-3-months-prepaid-2100000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽79,800 quarterly, By invoice, 3 months prepaid, 3,000,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/79800-quarterly-by-invoice-3-months-prepaid-3000000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽106,875 quarterly, By invoice, 3 months prepaid, 4,500,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/106875-quarterly-by-invoice-3-months-prepaid-4500000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽125,400 quarterly, By invoice, 3 months prepaid, 6,000,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/125400-quarterly-by-invoice-3-months-prepaid-6000000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽142,500 quarterly, By invoice, 3 months prepaid, 7,500,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/142500-quarterly-by-invoice-3-months-prepaid-7500000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽162,450 quarterly, By invoice, 3 months prepaid, 9,000,000 emails in 3 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/162450-quarterly-by-invoice-3-months-prepaid-9000000-emails-in-3-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽32,400 half-yearly, By invoice, 6 months prepaid, 600,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/32400-half-yearly-by-invoice-6-months-prepaid-600000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽48,600 half-yearly, By invoice, 6 months prepaid, 1,200,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/48600-half-yearly-by-invoice-6-months-prepaid-1200000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽64,800 half-yearly, By invoice, 6 months prepaid, 1,800,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/64800-half-yearly-by-invoice-6-months-prepaid-1800000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽94,500 half-yearly, By invoice, 6 months prepaid, 3,000,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/94500-half-yearly-by-invoice-6-months-prepaid-3000000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽113,400 half-yearly, By invoice, 6 months prepaid, 4,200,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/113400-half-yearly-by-invoice-6-months-prepaid-4200000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽151,200 half-yearly, By invoice, 6 months prepaid, 6,000,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/151200-half-yearly-by-invoice-6-months-prepaid-6000000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽202,500 half-yearly, By invoice, 6 months prepaid, 9,000,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/202500-half-yearly-by-invoice-6-months-prepaid-9000000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽237,600 half-yearly, By invoice, 6 months prepaid, 12,000,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/237600-half-yearly-by-invoice-6-months-prepaid-12000000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽270,000 half-yearly, By invoice, 6 months prepaid, 15,000,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/270000-half-yearly-by-invoice-6-months-prepaid-15000000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽307,800 half-yearly, By invoice, 6 months prepaid, 18,000,000 emails in 6 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/307800-half-yearly-by-invoice-6-months-prepaid-18000000-emails-in-6-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽32,400 half-yearly, By invoice, 6 months prepaid, 600,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/32400-half-yearly-by-invoice-6-months-prepaid-600000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽48,600 half-yearly, By invoice, 6 months prepaid, 1,200,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/48600-half-yearly-by-invoice-6-months-prepaid-1200000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽64,800 half-yearly, By invoice, 6 months prepaid, 1,800,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/64800-half-yearly-by-invoice-6-months-prepaid-1800000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽94,500 half-yearly, By invoice, 6 months prepaid, 3,000,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/94500-half-yearly-by-invoice-6-months-prepaid-3000000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽113,400 half-yearly, By invoice, 6 months prepaid, 4,200,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/113400-half-yearly-by-invoice-6-months-prepaid-4200000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽151,200 half-yearly, By invoice, 6 months prepaid, 6,000,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/151200-half-yearly-by-invoice-6-months-prepaid-6000000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽202,500 half-yearly, By invoice, 6 months prepaid, 9,000,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/202500-half-yearly-by-invoice-6-months-prepaid-9000000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽237,600 half-yearly, By invoice, 6 months prepaid, 12,000,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/237600-half-yearly-by-invoice-6-months-prepaid-12000000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽270,000 half-yearly, By invoice, 6 months prepaid, 15,000,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/270000-half-yearly-by-invoice-6-months-prepaid-15000000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽307,800 half-yearly, By invoice, 6 months prepaid, 18,000,000 emails in 6 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/307800-half-yearly-by-invoice-6-months-prepaid-18000000-emails-in-6-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽18,000 yearly, By invoice, 12 months prepaid, 300,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/18000-yearly-by-invoice-12-months-prepaid-300000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽30,000 yearly, By invoice, 12 months prepaid, 600,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/30000-yearly-by-invoice-12-months-prepaid-600000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽57,600 yearly, By invoice, 12 months prepaid, 1,200,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/57600-yearly-by-invoice-12-months-prepaid-1200000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽86,400 yearly, By invoice, 12 months prepaid, 2,400,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/86400-yearly-by-invoice-12-months-prepaid-2400000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽115,200 yearly, By invoice, 12 months prepaid, 3,600,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/115200-yearly-by-invoice-12-months-prepaid-3600000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽168,000 yearly, By invoice, 12 months prepaid, 6,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/168000-yearly-by-invoice-12-months-prepaid-6000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽201,600 yearly, By invoice, 12 months prepaid, 8,400,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/201600-yearly-by-invoice-12-months-prepaid-8400000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽268,800 yearly, By invoice, 12 months prepaid, 12,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/268800-yearly-by-invoice-12-months-prepaid-12000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽360,000 yearly, By invoice, 12 months prepaid, 18,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/360000-yearly-by-invoice-12-months-prepaid-18000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽422,400 yearly, By invoice, 12 months prepaid, 24,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/422400-yearly-by-invoice-12-months-prepaid-24000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽480,000 yearly, By invoice, 12 months prepaid, 30,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/480000-yearly-by-invoice-12-months-prepaid-30000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽547,200 yearly, By invoice, 12 months prepaid, 36,000,000 emails in 12 months, first 100 validations a month](https://datacircle.dev/validate-email-apis/unisender-go/547200-yearly-by-invoice-12-months-prepaid-36000000-emails-in-12-months-first-100-validations-a-month/llms.txt): $0.00 per 1,000, 50% complete, live
- [Unisender Go, ₽18,000 yearly, By invoice, 12 months prepaid, 300,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/18000-yearly-by-invoice-12-months-prepaid-300000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽30,000 yearly, By invoice, 12 months prepaid, 600,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/30000-yearly-by-invoice-12-months-prepaid-600000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽57,600 yearly, By invoice, 12 months prepaid, 1,200,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/57600-yearly-by-invoice-12-months-prepaid-1200000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽86,400 yearly, By invoice, 12 months prepaid, 2,400,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/86400-yearly-by-invoice-12-months-prepaid-2400000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽115,200 yearly, By invoice, 12 months prepaid, 3,600,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/115200-yearly-by-invoice-12-months-prepaid-3600000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽168,000 yearly, By invoice, 12 months prepaid, 6,000,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/168000-yearly-by-invoice-12-months-prepaid-6000000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽201,600 yearly, By invoice, 12 months prepaid, 8,400,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/201600-yearly-by-invoice-12-months-prepaid-8400000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽268,800 yearly, By invoice, 12 months prepaid, 12,000,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/268800-yearly-by-invoice-12-months-prepaid-12000000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽360,000 yearly, By invoice, 12 months prepaid, 18,000,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/360000-yearly-by-invoice-12-months-prepaid-18000000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽422,400 yearly, By invoice, 12 months prepaid, 24,000,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/422400-yearly-by-invoice-12-months-prepaid-24000000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽480,000 yearly, By invoice, 12 months prepaid, 30,000,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/480000-yearly-by-invoice-12-months-prepaid-30000000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, ₽547,200 yearly, By invoice, 12 months prepaid, 36,000,000 emails in 12 months, from the 101st validation a month](https://datacircle.dev/validate-email-apis/unisender-go/547200-yearly-by-invoice-12-months-prepaid-36000000-emails-in-12-months-from-the-101st-validation-a-month/llms.txt): $2.388 per 1,000, 50% complete, live
- [Unisender Go, contact us](https://datacircle.dev/validate-email-apis/unisender-go/contact-us/llms.txt): 50% complete, live

## Unisender Go's calls (1)

- `POST /ru/transactional/api/v1/email-validation/single.json`: [Unisender Go, free](https://datacircle.dev/validate-email-apis/unisender-go/free/llms.txt)

## Unisender Go's APIs (1)

- [Unisender Go: email verification API pricing, 120 plans](https://datacircle.dev/validate-email-apis/unisender-go/free/llms.txt)

## Unisender Go: email verification API alternatives

- [MyEmailVerifier, top-up from $5, Pay-As-You-Go, 2,000 emails + 100 bonus, GET /verifier/validate_single/{email}/{API_KEY}](https://datacircle.dev/validate-email-apis/myemailverifier/top-up-from-5-pay-as-you-go-2000-emails-100-bonus-get-verifier-validate-single-email-api-key/llms.txt): $2.381 per 1,000, 33% complete, live
- [Abstract API, $429 yearly, Starter, 180,000 requests / year](https://datacircle.dev/validate-email-apis/abstract-api/429-yearly-starter-180000-requests-year/llms.txt): $2.383 per 1,000, 33% complete, live
- [SafetyMails, $155 monthly](https://datacircle.dev/validate-email-apis/safetymails/155-monthly/llms.txt): $2.385 per 1,000, 33% complete, live
- [Anymail Finder, $299 monthly](https://datacircle.dev/validate-email-apis/anymail-finder/299-monthly/llms.txt): $2.392 per 1,000, 17% 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 2026-11-03.

- https://go.unisender.ru/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://go.unisender.ru/assets/doc/unisender-go-terms.pdf?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://godocs.unisender.ru/api-changelog?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://godocs.unisender.ru/web-api-ref?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing