# Fuse AI, contact us: Email verification API

> Verify whether an email address can be sent to, checked by ZeroBounce. Charged for every verdict but `unknown`, at the key's usage plan price.

Fuse AI's email verification API on its Usage plan. It returns 2 of the 6 key fields we check: Address, Deliverability.
We haven't run Fuse AI through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
Fuse AI gives this plan's price on request. 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/fuse-ai/contact-us
- [Email validation API: 160+ providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://docs.fuseai.com/guides/data-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.tryfuse.ai/api/v1/business/data/emails/verify`
- API key: with the plan, on https://docs.fuseai.com/guides/data-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.fuseai.com/api-reference/data/verify-an-email-address?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Fuse AI (https://fuseai.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

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Verify whether an email address can be sent to, checked by ZeroBounce. Charged for every verdict but `unknown`, at the key's usage plan price.

## Data

- Freshness: live
- What it checks: mailbox
- Keep data: until the Terms end: "Cease all use of Lookup Information upon termination of these Terms"
- Use data: only to identify sales opportunities, candidates for recruitment, or research existing customers and prospects, related to their profession, business, or employment [...] You may not: Replicate, sell, or exploit Lookup Information for commercial purposes without permission [...] Duplicate, copy, resell, reuse, or reverse engineer Lookup Information or any part of the Services without written consent from FuseAI [...] Commercially exploit data incorporating or using Lookup Information without permission [...] Transfer or disclose Lookup Information to third parties

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email. Optional: X-Idempotency-Key header
- Method: POST
- Path: /business/data/emails/verify

## About the plan

- Plan: Usage plan
- Who can get it: partners Fuse sets a usage plan up for on request, a key without one answers 403 API_NOT_ON_PLAN

## The 3 fields the plan's answer can hold

email, status, credits charged

## Fuse AI's plans (1)

- [Fuse AI, contact us](https://datacircle.dev/validate-email-apis/fuse-ai/contact-us/llms.txt): 33% complete, live

## Fuse AI's calls for this API (1)

- `POST /business/data/emails/verify`: [Fuse AI, contact us](https://datacircle.dev/validate-email-apis/fuse-ai/contact-us/llms.txt)

## Fuse AI's APIs (4)

- [Fuse AI: people search API pricing, 3 plans](https://datacircle.dev/people-search-apis/fuse-ai/720-yearly/llms.txt)
- [Fuse AI: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/fuse-ai/contact-us/llms.txt)
- [Fuse AI: email finder API pricing, 1 plan, POST /business/data/people/email](https://datacircle.dev/find-email-apis/fuse-ai/contact-us-usage-plan-post-business-data-people-email/llms.txt)
- [Fuse AI: email finder API pricing, 1 plan, POST /business/data/people/enrich-jobs](https://datacircle.dev/find-email-apis/fuse-ai/contact-us-usage-plan-post-business-data-people-enrich-jobs/llms.txt)
- [Fuse AI: phone finder API pricing, 1 plan, POST /business/data/people/phone](https://datacircle.dev/find-phone-apis/fuse-ai/contact-us-usage-plan-post-business-data-people-phone/llms.txt)
- [Fuse AI: phone finder API pricing, 1 plan, POST /business/data/people/enrich-jobs](https://datacircle.dev/find-phone-apis/fuse-ai/contact-us-usage-plan-post-business-data-people-enrich-jobs/llms.txt)

## Fuse AI: email verification API alternatives

- [Listclean, contact us, Custom volume, GET /verify/email/{email}](https://datacircle.dev/validate-email-apis/listclean/contact-us-custom-volume-get-verify-email-email/llms.txt): 33% complete, live
- [MailVeri, contact us, Enterprise, POST /verify-mails/](https://datacircle.dev/validate-email-apis/mailveri/contact-us-enterprise-post-verify-mails/llms.txt): 33% complete, live
- [MyEmailVerifier, contact us, Custom Quote, GET /verifier/validate_single/{email}/{API_KEY}](https://datacircle.dev/validate-email-apis/myemailverifier/contact-us-custom-quote-get-verifier-validate-single-email-api-key/llms.txt): 33% complete, live
- [ExactVerify, contact us, GET /v1/single](https://datacircle.dev/validate-email-apis/exactverify/contact-us-get-v1-single/llms.txt): 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 2026-11-02.

- https://docs.fuseai.com/api-reference/data/verify-an-email-address.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.fuseai.com/concepts/credits.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.fuseai.com/concepts/rate-limits.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.fuseai.com/concepts/scopes?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.fuseai.com/guides/data-api.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://fuseai.com/legal/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://fuseai.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing