# Temsor, free: Email verification API

> Checks an e-mail address: syntax, whether the domain can actually receive mail, disposable and role-account detection, and typo correction.

Temsor's Free plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields. Temsor's docs list 4: Address, Deliverability, Confidence, Company.
We haven't run Temsor through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 4,468 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. [See the best free email verification API plan.](https://datacircle.dev/best-email-verification-api.txt)
[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. Disify's $9 monthly plan 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/temsor/free
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://api.temsor.com/fiyat?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.temsor.com/v1/email/verify`
- API key: with the plan, on https://api.temsor.com/fiyat?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://api.temsor.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#email_verify
- Sold by: Temsor (https://temsor.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-08

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: 42 other Temsor calls

## Not found

- $ per 1,000 calls that find nothing: $0.00

## In their words

- Their pitch: Checks an e-mail address: syntax, whether the domain can actually receive mail, disposable and role-account detection, and typo correction.

## Data

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

## Plan

- Pay: $0
- You get: 500 credits a month
- Enough for: 500 calls a month

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: rejectFreeProviders, rejectRoleAccounts
- Method: POST
- Path: /v1/email/verify

## About the plan

- Plan: Free
- Who can get it: businesses, for use in their trade or business (the terms: a digital service offered to businesses, not to consumers)

## The 15 fields the plan's answer can hold

input, normalized email, local part, domain, verdict, score, syntax check, domain resolves, mail exchanger check, disposable check, role account check, free provider check, mail exchangers, typo suggestion, reasons

## Temsor's plans (4)

- [Temsor, free](https://datacircle.dev/validate-email-apis/temsor/free/llms.txt): $0.00 per 1,000, 67% complete
- [Temsor, $10 pack](https://datacircle.dev/validate-email-apis/temsor/10-pack/llms.txt): $0.50 per 1,000, 67% complete
- [Temsor, $25 pack](https://datacircle.dev/validate-email-apis/temsor/25-pack/llms.txt): $0.455 per 1,000, 67% complete
- [Temsor, $50 pack](https://datacircle.dev/validate-email-apis/temsor/50-pack/llms.txt): $0.417 per 1,000, 67% complete

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

- `POST /v1/email/verify`: [Temsor, free](https://datacircle.dev/validate-email-apis/temsor/free/llms.txt)

## Temsor's APIs (2)

- [Temsor: email verification API pricing, 4 plans](https://datacircle.dev/validate-email-apis/temsor/free/llms.txt)
- [Temsor: phone validation API pricing, 4 plans](https://datacircle.dev/validate-phone-apis/temsor/free/llms.txt)

## Temsor: email verification API alternatives

- [Icypeas, $9,980 yearly, Hypergrowth, 2,400,000 credits a year, POST /email-verification](https://datacircle.dev/validate-email-apis/icypeas/9980-yearly-hypergrowth-2400000-credits-a-year-post-email-verification/llms.txt): $0.416 per 1,000, 33% complete
- [Mailthentic, $499 yearly, Pro (yearly), POST /api/verify/single](https://datacircle.dev/validate-email-apis/mailthentic/499-yearly-pro-yearly-post-api-verify-single/llms.txt): $0.416 per 1,000, 67% complete, live
- [VerifySwift, $249.99 monthly, Monthly Credits 600,000](https://datacircle.dev/validate-email-apis/verifyswift/249-99-monthly-monthly-credits-600000/llms.txt): $0.417 per 1,000, 50% complete, live
- [MyEmailVerifier, $219 monthly, Monthly Subscription, 500,000 emails + 25,000 bonus, GET /verifier/validate_single/{email}/{API_KEY}](https://datacircle.dev/validate-email-apis/myemailverifier/219-monthly-monthly-subscription-500000-emails-25000-bonus-get-verifier-validate-single-email-api-key/llms.txt): $0.417 per 1,000, 33% 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://api.temsor.com/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.temsor.com/fiyat?lang=en&utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.temsor.com/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://temsor.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://temsor.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://temsor.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing