# T2A, top-up: Email verification API

> Validate the syntax of an email address whilst also checking that the domain actually exists.

T2A's email verification API on its Buy Credits plan. It returns 1 of the 6 key fields we check: Deliverability.
We haven't run T2A through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan costs . We rank 3,341 plans for email verification APIs by price. Half the plans cost $1.985 per 1,000 emails or less.
[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 the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/t2a/top-up
- [Email validation API: 160+ providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://t2a.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: Docs behind sign-up
- API key: with the plan, on https://t2a.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://t2a.io/docs/method/validate-email?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: T2A (https://t2a.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 17%
- Deliverability: ✓

## Price

- Billing: pay first

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Validate the syntax of an email address whilst also checking that the domain actually exists.

## Data

- What it checks: format
- Keep data: no longer than is necessary to provide the service to your users
- Use data: [...] Permitted Use: internal business use as part of a software product or website operated by the Customer [or the client of the Customer]. [...] Customer Restrictions. You shall: ensure that the Service and the Results are only used for the Permitted Use, not use the Service for any purpose contrary to any law or regulation or any regulatory code, guidance or request, not extract, reutilise, use, exploit, redistribute, redisseminate, copy or store the Results for any purpose not expressly permitted by these Terms, not do anything which may damage the reputation of Simunix, the Data or the Services, including by way of using the Results (wholly or in part) in any manner which is pornographic, racist or that incites religious hatred or violence, not use the Service for any application that replicates or attempts to replace the essential user experience of T2A, ukphonebook.com or Orbis, not cache or store Results for any longer than is necessary to provide the service to your users, [...] not take any action that imposes or may impose (as determined by Simunix at its sole discretion) an unreasonable or disproportionately large load on Simunix’s (or its third party providers’) infrastructure, not engage in any form of automated searching of the Data (including scraping or harvesting or using 'crawling' or 'spider' technology) and not attempt to bulk download data from the Service except where such a download is expressly permitted by the Service, not interfere or attempt to interfere with the proper working of the Service or any activities conducted on the Service, not bypass any measures Simunix may use to prevent or restrict access to the Service, when downloading any file or other data created by using the Additional Services ensure that it is only stored on the Customer's System, not use the Service in any manner that could interfere with, disrupt, negatively affect or inhibit other users from fully enjoying the Service or that could damage, disable, overburden or impair the functioning of our Service in any manner, and only use address searches for public facing websites and not for the Customer's internal use. [...] you shall have no rights in or to the Service, the Data or the Results other than the right to use them in accordance with this Contract

## Plan

- Expires: 12 months

## Rate limit

- Batch: 1

## The call

- You send: Docs behind sign-up

## About the plan

- Plan: Buy Credits
- Who can get it: software developers only, a business or organisation buying credits (terms: "T2A IS A SERVICE FOR SOFTWARE DEVELOPERS ONLY")

## The 2 fields the plan's answer can hold

format valid, domain exists

## T2A's plans (1)

- [T2A, top-up](https://datacircle.dev/validate-email-apis/t2a/top-up/llms.txt): 17% complete

## T2A's calls for this API (1)

- Docs behind sign-up: [T2A, top-up](https://datacircle.dev/validate-email-apis/t2a/top-up/llms.txt)

## T2A's APIs (4)

- [T2A: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/t2a/top-up/llms.txt)
- [T2A: Local business search API pricing, 1 plan](https://datacircle.dev/local-business-search-apis/t2a/top-up/llms.txt)
- [T2A: phone finder API pricing, 1 plan, Contact Data Enrichment](https://datacircle.dev/find-phone-apis/t2a/top-up-buy-credits-contact-data-enrichment/llms.txt)
- [T2A: phone finder API pricing, 1 plan, Telephone Residential](https://datacircle.dev/find-phone-apis/t2a/top-up-buy-credits-telephone-residential/llms.txt)
- [T2A: phone validation API pricing, 1 plan, Validate a mobile phone number](https://datacircle.dev/validate-phone-apis/t2a/top-up-buy-credits-validate-a-mobile-phone-number/llms.txt)
- [T2A: phone validation API pricing, 1 plan, Validate a phone number](https://datacircle.dev/validate-phone-apis/t2a/top-up-buy-credits-validate-a-phone-number/llms.txt)

## T2A: email verification API alternatives

- [Clearout, $40 pack, 5,000 credits, POST /email/verify/business](https://datacircle.dev/validate-email-apis/clearout/40-pack-5000-credits-post-email-verify-business/llms.txt): 33% complete
- [Data247, $12 pack](https://datacircle.dev/validate-email-apis/data247/12-pack/llms.txt): 33% complete, stored
- [Hatch, $50 pack](https://datacircle.dev/validate-email-apis/hatch/50-pack/llms.txt): 17% complete
- [SearchBug, top-up from $10](https://datacircle.dev/validate-email-apis/searchbug/top-up-from-10/llms.txt): 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 2026-11-04.

- https://t2a.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://t2a.io/docs/method/validate-email?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://t2a.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://t2a.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing