# RealMail, free: Email verification API

> Friendly, customizable, and accurate email validation with minimal technical implementation and real-time configuration.

RealMail'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 rank 2,467 plans by price. [treg's top-up from $10](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) costs the least per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $26.95 per 1,000 emails when no provider answers.
[Enrich.so](https://datacircle.dev/validate-email-apis/enrich-so/149-monthly/llms.txt), [GetProspect](https://datacircle.dev/validate-email-apis/getprospect/369-pack/llms.txt) and [treg](https://datacircle.dev/validate-email-apis/treg/top-up-from-10/llms.txt) are the best email verification API providers in our benchmark.

- This page: https://datacircle.dev/validate-email-apis/realmail/free
- [Best email verification API in 2026](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://realmail.dev
- Request: `POST https://api.realmail.dev/v1/validate`
- API key: with the plan, on https://realmail.dev
- Its API docs: https://realmail.dev/docs
- Sold by: RealMail (https://realmail.dev)
- Checked: 2026-10-27

## In the answer

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

## 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: Friendly, customizable, and accurate email validation with minimal technical implementation and real-time configuration.

## Data

- Freshness: stored
- What it checks: format, mail servers, disposable domains, role addresses
- Keep data: no limit
- Use data: any

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 calls, once

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: email, Content-Type header "application/json"
- Method: POST
- Path: /v1/validate

## About the plan

- Plan: Free trial
- Who can get it: anyone

## The 12 fields the plan's answer can hold

email address, valid email format, suggestion, MX found, active website, disposable, suspected role, free email provider, valid, reason code, reason message, remaining validations

## RealMail's plans (9)

- [RealMail, free](https://datacircle.dev/validate-email-apis/realmail/free/llms.txt): $0.00 per 1,000, 33% complete, stored
- [RealMail, $16 pack](https://datacircle.dev/validate-email-apis/realmail/16-pack/llms.txt): $6.40 per 1,000, 33% complete, stored
- [RealMail, $30 pack](https://datacircle.dev/validate-email-apis/realmail/30-pack/llms.txt): $6.00 per 1,000, 33% complete, stored
- [RealMail, $50 pack](https://datacircle.dev/validate-email-apis/realmail/50-pack/llms.txt): $5.00 per 1,000, 33% complete, stored
- [RealMail, $100 pack](https://datacircle.dev/validate-email-apis/realmail/100-pack/llms.txt): $4.00 per 1,000, 33% complete, stored
- [RealMail, $130 pack](https://datacircle.dev/validate-email-apis/realmail/130-pack/llms.txt): $2.60 per 1,000, 33% complete, stored
- [RealMail, $240 pack](https://datacircle.dev/validate-email-apis/realmail/240-pack/llms.txt): $2.40 per 1,000, 33% complete, stored
- [RealMail, $350 pack](https://datacircle.dev/validate-email-apis/realmail/350-pack/llms.txt): $1.40 per 1,000, 33% complete, stored
- [RealMail, $500 pack](https://datacircle.dev/validate-email-apis/realmail/500-pack/llms.txt): $1.00 per 1,000, 33% complete, stored

## RealMail's calls (1)

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

## RealMail's APIs (1)

- [RealMail: email verification API pricing, 9 plans](https://datacircle.dev/validate-email-apis/realmail/free/llms.txt)

## RealMail: email verification API alternatives

- [BigDataCloud, $9.95 monthly](https://datacircle.dev/validate-email-apis/bigdatacloud/9-95-monthly/llms.txt): $0.995 per 1,000, 33% complete, stored
- [ReefAPI, $50 monthly](https://datacircle.dev/validate-email-apis/reefapi/50-monthly/llms.txt): $1.00 per 1,000, 67% complete, stored
- [Emailit, top-up from $20, Pay as you go, POST /email-verifications, Verify an address](https://datacircle.dev/validate-email-apis/emailit/top-up-from-20-pay-as-you-go-post-email-verifications-verify-an-address/llms.txt): $1.00 per 1,000, 67% complete, stored (has MX records: live)
- [Elastic Email, $1,500 monthly, Email Marketing Pro (300,000 contacts), POST /verifications/files](https://datacircle.dev/validate-email-apis/elastic-email/1500-monthly-email-marketing-pro-300000-contacts-post-verifications-files/llms.txt): $1.00 per 1,000, 50% complete, stored

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-10-27.

- https://realmail.dev
- https://realmail.dev/docs
- https://www.realmail.dev/legal/privacy
- https://www.realmail.dev/legal/terms