# Trustfull, free: Email verification API

> Trustfull Email checks whether an email address is real and deliverable, adds the person, company and online accounts linked to it, and returns a 0–1000 risk score.

Trustfull's email verification API on its Free trial plan. It costs $0.00 per 1,000 emails. It returns 4 of the 6 key fields we check: Address, Deliverability, Confidence, Company.
We haven't run Trustfull through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. 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/trustfull/free
- [Email validation API: 160+ providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://trustfull.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.fido.id/1.0/email`
- API key: with the plan, on https://trustfull.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.trustfull.com/reference/email-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Trustfull (https://trustfull.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-04

## 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: Trustfull Phone · Trustfull IP · Trustfull Domain · Trustfull Document · Trustfull Login (Score) · Trustfull Login (Enrollment) · Trustfull Session · Trustfull Hub · Phone Validation · Email Disposable · Phone Disposable · Ip Proxy API · Phone Data Breaches · Phone Portability · Phone To Name · Age Estimation

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Trustfull Email checks whether an email address is real and deliverable, adds the person, company and online accounts linked to it, and returns a 0–1000 risk score.

## 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: 50 credits
- Enough for: about 833 calls, once

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: customer_id, email, claims "email". Optional: max_enrichment_time, model_id
- Method: POST
- Path: /email

## About the plan

- Plan: Free trial
- Who can get it: new accounts

## The 41 fields the plan's answer can hold

email, status, sub status, disposable, disposable provider name, spamtrap, free, domain, domain age, domain MX is valid, domain MX provider, domain registrar, domain registered to, score, score cluster, domain website exists, domain website exists taxonomy, domain website exists SSL, account length, account dots count, account numbers count, account letters count, account symbols count, account vowels count, account consonants count, account dots ratio, account numbers ratio, account letters ratio, account symbols ratio, account vowels ratio, account consonants ratio, did you mean, has stop words, reason code, domain internal links count, domain external links count, domain internal email links count, domain external email links count, domain internal images count, domain external images count, domain page size

## Trustfull's plans (6)

- [Trustfull, free](https://datacircle.dev/validate-email-apis/trustfull/free/llms.txt): $0.00 per 1,000, 67% complete, live
- [Trustfull, €500 pack](https://datacircle.dev/validate-email-apis/trustfull/500-pack/llms.txt): $67.518 per 1,000, 67% complete, live
- [Trustfull, €1,000 pack](https://datacircle.dev/validate-email-apis/trustfull/1000-pack/llms.txt): $67.518 per 1,000, 67% complete, live
- [Trustfull, €2,500 pack](https://datacircle.dev/validate-email-apis/trustfull/2500-pack/llms.txt): $67.518 per 1,000, 67% complete, live
- [Trustfull, €5,000 pack](https://datacircle.dev/validate-email-apis/trustfull/5000-pack/llms.txt): $67.518 per 1,000, 67% complete, live
- [Trustfull, contact us](https://datacircle.dev/validate-email-apis/trustfull/contact-us/llms.txt): 67% complete, live

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

- `POST /email`: [Trustfull, free](https://datacircle.dev/validate-email-apis/trustfull/free/llms.txt)

## Trustfull's APIs (3)

- [Trustfull: email verification API pricing, 6 plans](https://datacircle.dev/validate-email-apis/trustfull/free/llms.txt)
- [Trustfull: reverse email lookup API pricing, 6 plans](https://datacircle.dev/reverse-email-lookup-apis/trustfull/free/llms.txt)
- [Trustfull: phone validation API pricing, 6 plans, POST /phone-validation](https://datacircle.dev/validate-phone-apis/trustfull/free-trial-post-phone-validation/llms.txt)
- [Trustfull: phone validation API pricing, 6 plans, POST /phone](https://datacircle.dev/validate-phone-apis/trustfull/free-trial-post-phone/llms.txt)

## Trustfull: email verification API alternatives

- [Dropcontact, €348 yearly](https://datacircle.dev/validate-email-apis/dropcontact/348-yearly/llms.txt): $65.267 per 1,000, 33% complete, live
- [TrekMail, $10 monthly, Pro, POST /verify, Verify one address (deep)](https://datacircle.dev/validate-email-apis/trekmail/10-monthly-pro-post-verify-verify-one-address-deep/llms.txt): $66.667 per 1,000, 50% complete, live
- [Defastra, top-up, Pay as you go, first 5,000 requests a month](https://datacircle.dev/validate-email-apis/defastra/top-up-pay-as-you-go-first-5000-requests-a-month/llms.txt): $70.00 per 1,000, 67% complete, live
- [MailerSend, $7 monthly, Hobby, POST /email-verification/verify](https://datacircle.dev/validate-email-apis/mailersend/7-monthly-hobby-post-email-verification-verify/llms.txt): $70.00 per 1,000, 17% complete, live
- [Amplemarket, $7,200 yearly](https://datacircle.dev/validate-email-apis/amplemarket/7200-yearly/llms.txt): $266.667 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 2026-11-04.

- https://docs.trustfull.com/docs/billing.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.trustfull.com/docs/data-catalogue-email.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.trustfull.com/docs/email-latency.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.trustfull.com/docs/introduction?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.trustfull.com/docs/trustfull-email.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.trustfull.com/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.trustfull.com/reference/email-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trustfull.com/legal/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trustfull.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing