# Ideal Postcodes, free: Email verification API

> Verify email addresses in real time to ensure accurate and reliable communication with your customers using Ideal Postcodes email validation API

Ideal Postcodes's email verification API on its Free trial plan. It costs $0.00 per 1,000 emails. It returns 1 of the 6 key fields we check: Deliverability.
We haven't run Ideal Postcodes 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/ideal-postcodes/free
- [Email validation API: 160+ providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://ideal-postcodes.co.uk/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `GET https://api.ideal-postcodes.co.uk/v1/emails`
- API key: with the plan, on https://ideal-postcodes.co.uk/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.ideal-postcodes.co.uk/docs/api/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Ideal Postcodes (https://ideal-postcodes.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-03

## In the answer

- Completeness: 17%
- Deliverability: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Resolve Address · Lookup Postcode · Phone Number Validation

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Verify email addresses in real time to ensure accurate and reliable communication with your customers using Ideal Postcodes email validation API

## Data

- Freshness: live
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: Except to the extent expressly permitted by law or agreed in writing by IDDQD, the Client is prohibited from: re-selling (whether for free or by charging) the Service Output or Service, [...] The Client may not (except to the extent expressly permitted by law or agreed in writing by IDDQD or in Third Party Contracts): use the Service to provide any software or a service which competes with the Software Materials or Service, undertake any data cleansing activities unless expressly permitted by the respective Third Party Contracts, use the Service, API data, or any content obtained through our platform to develop, train, improve, benchmark, enhance or evaluate any artificial intelligence, machine learning, or automated decision-making systems, whether directly or indirectly. [...] The Service and Software Materials are provided solely for the Client's own use. The Client may not resell or attempt to resell the Service Output, or market or otherwise distribute the Software Materials or Service without IDDQD's express written permission. [...] Lookups are not transferable to third parties, nor may it be used for the benefit of third parties by the Client. [...] Any test balance disbursed on Your account (including Your initial free balance) may only be used for testing and evaluation purposes.

## Plan

- Pay: £0
- You get: 50 credits
- Enough for: 50 calls, once
- Expires: 1 month

## Rate limit

- Per second: 30
- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: query. Optional: tags
- Method: GET
- Path: /v1/emails

## About the plan

- Plan: Free trial
- Who can get it: organisations only: the terms' Client "means the organisation named as the 'Client' or 'Business' or 'Company' in the registration form [...]"

## The 9 fields the plan's answer can hold

result, deliverable, catch-all, free, role, disposable, suggestions, response code, message

## Ideal Postcodes's plans (8)

- [Ideal Postcodes, free](https://datacircle.dev/validate-email-apis/ideal-postcodes/free/llms.txt): $0.00 per 1,000, 17% complete, live
- [Ideal Postcodes, £9 pack](https://datacircle.dev/validate-email-apis/ideal-postcodes/9-pack/llms.txt): $60.008 per 1,000, 17% complete, live
- [Ideal Postcodes, £42 pack](https://datacircle.dev/validate-email-apis/ideal-postcodes/42-pack/llms.txt): $50.916 per 1,000, 17% complete, live
- [Ideal Postcodes, £155 pack](https://datacircle.dev/validate-email-apis/ideal-postcodes/155-pack/llms.txt): $48.068 per 1,000, 17% complete, live
- [Ideal Postcodes, £420 pack](https://datacircle.dev/validate-email-apis/ideal-postcodes/420-pack/llms.txt): $43.755 per 1,000, 17% complete, live
- [Ideal Postcodes, £900 pack](https://datacircle.dev/validate-email-apis/ideal-postcodes/900-pack/llms.txt): $37.388 per 1,000, 17% complete, live
- [Ideal Postcodes, contact us, Custom package](https://datacircle.dev/validate-email-apis/ideal-postcodes/contact-us-custom-package/llms.txt): 17% complete, live
- [Ideal Postcodes, contact us, Registered charity](https://datacircle.dev/validate-email-apis/ideal-postcodes/contact-us-registered-charity/llms.txt): 17% complete, live

## Ideal Postcodes's calls for this API (1)

- `GET /v1/emails`: [Ideal Postcodes, free](https://datacircle.dev/validate-email-apis/ideal-postcodes/free/llms.txt)

## Ideal Postcodes's APIs (2)

- [Ideal Postcodes: email verification API pricing, 8 plans](https://datacircle.dev/validate-email-apis/ideal-postcodes/free/llms.txt)
- [Ideal Postcodes: phone validation API pricing, 8 plans](https://datacircle.dev/validate-phone-apis/ideal-postcodes/free/llms.txt)

## Ideal Postcodes: email verification API alternatives

- [Dropcontact, €588 yearly](https://datacircle.dev/validate-email-apis/dropcontact/588-yearly/llms.txt): $36.76 per 1,000, 33% complete, live
- [Postcoder, £46 monthly](https://datacircle.dev/validate-email-apis/postcoder/46-monthly/llms.txt): $36.805 per 1,000, 33% complete, live
- [Loqate, $300 pack, Pay-as-you-go $300, GET /EmailValidation/Interactive/Validate/v2.00/json6.ws](https://datacircle.dev/validate-email-apis/loqate/300-pack-pay-as-you-go-300-get-emailvalidation-interactive-validate-v2-00-json6-ws/llms.txt): $37.00 per 1,000, 50% complete, live
- [DeBounce, top-up from $45, 25K credits, GET /v1/, Single email validation, full](https://datacircle.dev/validate-email-apis/debounce/top-up-from-45-25k-credits-get-v1-single-email-validation-full/llms.txt): $37.80 per 1,000, 50% 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://docs.ideal-postcodes.co.uk/docs/api/api-reference.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.ideal-postcodes.co.uk/docs/api/email-validation.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.ideal-postcodes.co.uk/docs/cli/email.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.ideal-postcodes.co.uk/docs/guides/email-validation.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ideal-postcodes.co.uk/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ideal-postcodes.co.uk/guides/pricing-plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ideal-postcodes.co.uk/guides/what-is-a-lookup?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://ideal-postcodes.co.uk/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://terms.ideal-postcodes.co.uk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://terms.ideal-postcodes.co.uk/extended-terms-of-service/payg-lookup-licence?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing