# AtData, free: Email verification API

> Traditional email verification tells you if an address exists — but that’s not enough anymore. SafeToSend goes further, using real-time activity and engagement signals to determine if an address is not just valid, but valuable.

AtData's email verification API on its Free trial plan. It costs $0.00 per 1,000 emails. It returns 2 of the 6 key fields we check: Address, Deliverability.
We haven't run AtData through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 3,753 plans for email verification APIs by price. Half the plans cost $1.98 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/atdata/free
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://atdata.com/email-verification/safetosend-email-validation/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://api.atdata.com/v5/ev`
- API key: with the plan, on https://atdata.com/email-verification/safetosend-email-validation/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.atdata.com/reference/safe-to-send?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: AtData (https://atdata.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

- Completeness: 33%
- Address: ✓
- Deliverability: ✓

## Price

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

## Aggregators

- Aggregators: none

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Bounce

- Bounce refund: the credit, for a hard bounce returned to AtData within 10 business days with its bounce code, applied to the account balance on prepaid credits

## In their words

- Their pitch: Traditional email verification tells you if an address exists — but that’s not enough anymore. SafeToSend goes further, using real-time activity and engagement signals to determine if an address is not just valid, but valuable.

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: until the account or the terms end, then “delete or otherwise destroy all Licensed Data”
- Use data: Customer may use the Licensed Data for lawful internal business purposes in accordance with the provisions of these Terms [...] Customer will not sell, re-sell, sublicense, distribute, transmit, display, disclose, divulge, reveal, report, publish or transfer the Licensed Data or Services to any third party or reproduce or create derivative works based upon the Licensed Data or Services, or any portion thereof. Customer may not use the Services, or the results therefrom including, without limitation, the Licensed Data, in whole or in part, in the development of any data products or services to be provided to third parties including, without limitation, any list enhancement or data appending service or product. [...] All marketing communications used in connection with the Licensed Data shall (i) be devoid of any reference to the source of the recipient’s name and address or to any selection criteria or presumed knowledge concerning the intended recipient of such solicitation, (ii) comply with all applicable privacy policies, and (iii) not contain sexually explicit or obscene materials, or materials that are otherwise deemed offensive.

## Plan

- Pay: $0
- You get: 100 credits a month
- Enough for: 100 calls a month

## Rate limit

- Per second: 500
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: ip, timeout
- Method: GET
- Path: /v5/ev

## About the plan

- Plan: Free trial
- Who can get it: anyone with an InstantData account

## The 10 fields the plan's answer can hold

status, status code, domain type, email address, role account, email corrections, IP country code, IP state or province, IP routing type, IP address

## AtData's plans (6)

- [AtData, free](https://datacircle.dev/validate-email-apis/atdata/free/llms.txt): $0.00 per 1,000, 33% complete, live
- [AtData, $40 pack](https://datacircle.dev/validate-email-apis/atdata/40-pack/llms.txt): $8.00 per 1,000, 33% complete, live
- [AtData, $350 pack](https://datacircle.dev/validate-email-apis/atdata/350-pack/llms.txt): $7.00 per 1,000, 33% complete, live
- [AtData, $600 pack](https://datacircle.dev/validate-email-apis/atdata/600-pack/llms.txt): $6.00 per 1,000, 33% complete, live
- [AtData, $2,500 pack](https://datacircle.dev/validate-email-apis/atdata/2500-pack/llms.txt): $5.00 per 1,000, 33% complete, live
- [AtData, contact us](https://datacircle.dev/validate-email-apis/atdata/contact-us/llms.txt): 33% complete, live

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

- `GET /v5/ev`: [AtData, free](https://datacircle.dev/validate-email-apis/atdata/free/llms.txt)

## AtData's APIs (2)

- [AtData: email verification API pricing, 6 plans](https://datacircle.dev/validate-email-apis/atdata/free/llms.txt)
- [AtData: phone validation API pricing, 2 plans](https://datacircle.dev/validate-phone-apis/atdata/free/llms.txt)

## AtData: email verification API alternatives

- [MillionPhones, top-up from $5](https://datacircle.dev/validate-email-apis/millionphones/top-up-from-5/llms.txt): $5.00 per 1,000, 33% complete, live
- [NullBounce, $5 pack](https://datacircle.dev/validate-email-apis/nullbounce/5-pack/llms.txt): $5.00 per 1,000, 33% complete, live
- [Qualisend, $5 monthly, Pro, 1,000 credits a month, POST /verify/bulk](https://datacircle.dev/validate-email-apis/qualisend/5-monthly-pro-1000-credits-a-month-post-verify-bulk/llms.txt): $5.00 per 1,000, 50% complete, live
- [Bouncer, $250 pack, Pay as you go, 50,000 credits, POST /v1.1/email/verify/batch](https://datacircle.dev/validate-email-apis/bouncer/250-pack-pay-as-you-go-50000-credits-post-v1-1-email-verify-batch/llms.txt): $5.00 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 2026-11-02.

- https://atdata.com/email-verification/safetosend-email-validation/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://atdata.com/help/how-do-i-get-an-atdata-api-key/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://atdata.com/help/safetosend-email-verification-results-guide/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://atdata.com/help/what-is-the-api-dashboard/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://atdata.com/terms-of-service/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.atdata.com/reference/domain-types?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.atdata.com/reference/email-status?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.atdata.com/reference/getting-started?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.atdata.com/reference/safe-to-send?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.atdata.com/reference/safetosend-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.atdata.com/reference/status-codes?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing