# GBG, contact us: Email verification API

> Validate email addresses in GBG Go and surface fraud-related risk signals such as disposable addresses, tumbled addresses, and high-risk domains.

GBG's Contact sales plan lets you call the email verification API. We check each provider's docs for 6 fields. GBG's docs list 3: Address, Deliverability, Company.
We haven't run GBG through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
GBG gives this plan's price on request. We rank 4,391 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails.
[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. [StableEnrich's pay-as-you-go plan](https://datacircle.dev/validate-email-apis/stableenrich/pay-as-you-go-pay-per-request-with-x402-or-mpp-post-api-minerva-validate-emails/llms.txt) costs the least for 10,000 emails a month: $0.05.
[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.
[pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt), [Validemail.co](https://datacircle.dev/validate-email-apis/validemail-co/9-90-monthly-9-90-month-get-api-v1-validate/llms.txt) and [looot](https://datacircle.dev/validate-email-apis/looot/top-up/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/gbg/contact-us
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://www.gbg.com/en/contact/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://eu.platform.go.gbgplc.com/v2/captain/journey/start`
- API key: with the plan, on https://www.gbg.com/en/contact/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.go.gbgplc.com/docs/go-v2/api-reference/endpoint/start-journey?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: GBG (https://www.gbg.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-10

## In the answer

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

## Price

- Billing: contact

## Aggregators

- Aggregators: none

## In their words

- Their pitch: Validate email addresses in GBG Go and surface fraud-related risk signals such as disposable addresses, tumbled addresses, and high-risk domains.

## Data

- What it checks: format, disposable domains
- Keep data: no limit
- Use data: The Customer shall use the Service only for the Customer Use Case selected and specified in the Order Form.

## Rate limit

- Batch: 1

## Speed

- Answer: in the call

## The call

- You send: resourceId, context.config.delivery "api", context.config.inlineResult true, context.subject.identity.firstName, context.subject.identity.lastNames, context.subject.identity.emails[].type, context.subject.identity.emails[].email. Optional: context.config.syncWaitSeconds, context.subject.identity.dateOfBirth, context.subject.identity.phones[].type, context.subject.identity.phones[].number, context.subject.identity.currentAddress.lines, context.subject.identity.currentAddress.locality, context.subject.identity.currentAddress.dependentLocality, context.subject.identity.currentAddress.postalCode, context.subject.identity.currentAddress.country
- Method: POST
- Path: /journey/start

## About the plan

- Plan: Contact sales
- Who can get it: GBG Go customers, who create their API client in the Account management portal

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

outcome, execution status, email exists, domain exists, fraud risk, fraud risk score, email fraud type, email fraud signals, email risks, days email verified, days domain verified, domain country code, email total hits, email unique hits

## GBG's plans (1)

- [GBG, contact us](https://datacircle.dev/validate-email-apis/gbg/contact-us/llms.txt): 50% complete

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

- `POST /journey/start`: [GBG, contact us](https://datacircle.dev/validate-email-apis/gbg/contact-us/llms.txt)

## GBG's APIs (4)

- [GBG: business verification API pricing, 1 plan](https://datacircle.dev/business-verification-apis/gbg/contact-us/llms.txt)
- [GBG: email verification API pricing, 1 plan](https://datacircle.dev/validate-email-apis/gbg/contact-us/llms.txt)
- [GBG: people search API pricing, 1 plan](https://datacircle.dev/people-search-apis/gbg/contact-us/llms.txt)
- [GBG: phone validation API pricing, 1 plan](https://datacircle.dev/validate-phone-apis/gbg/contact-us/llms.txt)

## GBG: email verification API alternatives

- [Enrich.so, contact us, Enterprise, POST /email-validation](https://datacircle.dev/validate-email-apis/enrich-so/contact-us/llms.txt): 50% complete, live
- [KaijuVerifier, contact us, Enterprise, POST /api/v1/jobs, Submit an async bulk job](https://datacircle.dev/validate-email-apis/kaijuverifier/contact-us-enterprise-post-api-v1-jobs-submit-an-async-bulk-job/llms.txt): 50% complete, stored
- [Prime Verifier, contact us, Custom, over 2,000,000 credits, POST /v1/verify/single](https://datacircle.dev/validate-email-apis/prime-verifier/contact-us-custom-over-2000000-credits-post-v1-verify-single/llms.txt): 50% complete
- [GetProspect, contact us, Custom terms, POST /v2/email-verifications](https://datacircle.dev/validate-email-apis/getprospect/contact-us-custom-terms-post-v2-email-verifications/llms.txt): 50% complete, live
- [Cartegie, contact us](https://datacircle.dev/validate-email-apis/cartegie/contact-us/llms.txt): 50% complete

## Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-10.

- https://docs.go.gbgplc.com/docs/go-v2/api-reference/endpoint/start-journey?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.go.gbgplc.com/docs/go-v2/api-reference/overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.go.gbgplc.com/docs/go-v2/platform/modules/digital-identities-insights/email-insights?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.go.gbgplc.com/docs/go-v2/tutorials/run-journeys-synchronously?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.gbg.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.gbg.com/en/contact/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.gbgplc.com/legal-and-regulatory/agreement-for-gbg-services/investigate-api-service-schedule?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing