# Trumailo, free: Email verification API

> Trumailo runs every signal that decides whether your email arrives, then tells you what it learned and how confident it is. Real SMTP handshake. Catch-all probe. Provider mapping. Cached responses under ten milliseconds.

Trumailo's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Confidence.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), Trumailo's best plan scores 39.3 out of 100.
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/trumailo/free
- [Email validation API: 160+ providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://trumailo.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- Request: `POST https://api.trumailo.com/v1/verify`
- API key: with the plan, on https://trumailo.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- Its API docs: https://trumailo.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Trumailo (https://trumailo.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-03

## In the answer

- Completeness: 50%
- Address: ✓
- Deliverability: ✓
- Confidence: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: nothing else

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Trumailo runs every signal that decides whether your email arrives, then tells you what it learned and how confident it is. Real SMTP handshake. Catch-all probe. Provider mapping. Cached responses under ten milliseconds.

## Data

- Freshness: live (MX, provider: 24 hours)
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: Terms, Acceptable use: "You agree not to use Trumailo to: Validate addresses for unsolicited bulk email ("spam"), phishing, scraping, harassment, or stalking. Reverse-engineer, resell, or sublicense the service without our written permission. [...] Violate any law applicable to you, your users, or recipients of your sends." AUP, Prohibited uses: "You may not use Trumailo to: Validate addresses scraped from public websites, dictionaries, or breach dumps without consent. [...] Send unsolicited bulk email ("spam"), including after using Trumailo to qualify the list. [...] Build a competing email-verification product that resells our verdicts. [...] Circumvent rate limits, plan limits, or our spam-detection systems. Use the service in a country or for an end use covered by sanctions you're subject to."

## Plan

- Pay: $0
- You get: 200 credits a month
- Enough for: 200 calls a month

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call
- Median: 2.07 s

## The call

- You send: email, Content-Type header "application/json"
- Method: POST
- Path: /verify

## About the plan

- Plan: Free
- Who can get it: anyone 16 or older

## The 14 fields the plan's answer can hold

email, status, quality score, confidence, response time, provider, reason, syntax, MX, SMTP, catch-all, disposable, role, did you mean

## Trumailo's plans (8)

- [Trumailo, free](https://datacircle.dev/validate-email-apis/trumailo/free/llms.txt): $0.00 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, $19 monthly](https://datacircle.dev/validate-email-apis/trumailo/19-monthly/llms.txt): $0.38 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, $59 monthly](https://datacircle.dev/validate-email-apis/trumailo/59-monthly/llms.txt): $0.295 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, $199 monthly](https://datacircle.dev/validate-email-apis/trumailo/199-monthly/llms.txt): $0.199 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, $190 yearly](https://datacircle.dev/validate-email-apis/trumailo/190-yearly/llms.txt): $0.317 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, $590 yearly](https://datacircle.dev/validate-email-apis/trumailo/590-yearly/llms.txt): $0.246 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, $1,990 yearly](https://datacircle.dev/validate-email-apis/trumailo/1990-yearly/llms.txt): $0.166 per 1,000, 50% complete, live (MX, provider: 24 hours)
- [Trumailo, contact us](https://datacircle.dev/validate-email-apis/trumailo/contact-us/llms.txt): 50% complete, live (MX, provider: 24 hours)

## Trumailo's calls (1)

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

## Trumailo's APIs (1)

- [Trumailo: email verification API pricing, 8 plans](https://datacircle.dev/validate-email-apis/trumailo/free/llms.txt)

## Trumailo: email verification API alternatives

- [Emails Checker, $825 pack](https://datacircle.dev/validate-email-apis/emails-checker/825-pack/llms.txt): $0.165 per 1,000, 50% complete, live
- [SMTPing, $299 yearly, Business, POST /verify/bulk](https://datacircle.dev/validate-email-apis/smtping/299-yearly-business-post-verify-bulk/llms.txt): $0.166 per 1,000, 50% complete, live
- [VerifySwift, $1,499.99 monthly, Daily Credits 300,000 a day](https://datacircle.dev/validate-email-apis/verifyswift/1499-99-monthly-daily-credits-300000-a-day/llms.txt): $0.167 per 1,000, 50% complete, live
- [VeriMails, $3,000 yearly, Agency, POST /api/verify/single](https://datacircle.dev/validate-email-apis/verimails/3000-yearly-agency-post-api-verify-single/llms.txt): $0.167 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 2026-11-03.

- https://api.trumailo.com/v1/plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trumailo.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trumailo.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#pricing
- https://trumailo.com/aup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trumailo.com/privacy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trumailo.com/refunds?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://trumailo.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing