# Allegrow, $99 monthly, Starter, POST /v1/email/validate-file: Email verification API

> Embed Allegrow's powerful risk analysis directly into your applications. Our API gives you programmatic access to the same 'Safe' or 'Unsafe' verdicts that power our platform.

Allegrow's email verification API on its Starter plan. It costs $19.80 per 1,000 emails. It returns 2 of the 6 key fields we check: Address, Deliverability.
We haven't run Allegrow through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
Half of the 3,753 plans we rank by price cost $1.98 per 1,000 emails or less. This plan costs less per 1,000 emails than 5% of the 3,753 plans.
[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/allegrow/99-monthly-starter-post-v1-email-validate-file
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://www.allegrow.co/plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.allegrow.co/v1/email/validate-file`
- API key: with the plan, on https://www.allegrow.co/plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://docs.allegrow.co/reference/create-csv-validation-job?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Allegrow (https://www.allegrow.co?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

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

## Price

- $ per 1,000 emails: $19.80
- Per: result
- Billing: monthly
- $ a month: $99

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Validate Email (Synchronous) · Validate Email (Asynchronous)

## Overage

- Units cap: hard
- Add-ons: 1,000 credits once for $8 ($8.00 per 1,000)

## Catch-all

- $ per 1,000: $19.80

## In their words

- Their pitch: Embed Allegrow's powerful risk analysis directly into your applications. Our API gives you programmatic access to the same 'Safe' or 'Unsafe' verdicts that power our platform.

## Data

- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: Customer may only use the Service internally. Customer will not (and will not permit its Users or anyone else to) [...] (a) provide access to, distribute, sell, or sublicense the Service to a third party (other than Users), (b) use the Service on behalf of, or to provide any product or service to, third parties, (c) use the Service to develop a similar or competing product or service or use the Service if you (or any of your Users) are direct competitor of Allegrow, [...] (g) publish benchmarks or performance information about the Service [...]

## Plan

- Pay: $99
- You get: 5,000 credits a month
- Enough for: 5,000 results a month
- Expires: monthly allowance resets on the 1st of each calendar month (UTC), additional credits never expire

## Rate limit

- Concurrent: 5

## Speed

- Answer: by polling or webhook

## The call

- You send: emailColumn. Optional: fileName, callbackUrl
- Method: POST
- Path: /v1/email/validate-file

## About the plan

- Plan: Starter
- Who can get it: anyone, API access available upon request

## The 2 fields the plan's answer can hold

email, status

## Allegrow's plans (3)

- [Allegrow, $99 monthly, Starter, POST /v1/email/validate-file](https://datacircle.dev/validate-email-apis/allegrow/99-monthly-starter-post-v1-email-validate-file/llms.txt): $19.80 per 1,000, 33% complete
- [Allegrow, $16,080 yearly, Scale Plus Unlimited, POST /v1/email/validate-file](https://datacircle.dev/validate-email-apis/allegrow/16080-yearly-scale-plus-unlimited-post-v1-email-validate-file/llms.txt): no limit, 33% complete
- [Allegrow, contact us, API Plan, POST /v1/email/validate-file](https://datacircle.dev/validate-email-apis/allegrow/contact-us-api-plan-post-v1-email-validate-file/llms.txt): 33% complete

## Allegrow's calls (3)

- `POST /v1/email/validate-file`: [Allegrow, $99 monthly, Starter, POST /v1/email/validate-file](https://datacircle.dev/validate-email-apis/allegrow/99-monthly-starter-post-v1-email-validate-file/llms.txt)
- `POST /v1/email/validate-async`: [Allegrow, $99 monthly, Starter, POST /v1/email/validate-async](https://datacircle.dev/validate-email-apis/allegrow/99-monthly-starter-post-v1-email-validate-async/llms.txt)
- `POST /v1/email/validate`: [Allegrow, $99 monthly, Starter, POST /v1/email/validate](https://datacircle.dev/validate-email-apis/allegrow/99-monthly-starter-post-v1-email-validate/llms.txt)

## Allegrow's APIs (1)

- [Allegrow: email verification API pricing, 3 plans, POST /v1/email/validate-file](https://datacircle.dev/validate-email-apis/allegrow/99-monthly-starter-post-v1-email-validate-file/llms.txt)

## Allegrow: email verification API alternatives

- [Databar, $99 monthly](https://datacircle.dev/validate-email-apis/databar/99-monthly/llms.txt): $19.80 per 1,000, 67% complete, live
- [Findymail, $99 monthly](https://datacircle.dev/validate-email-apis/findymail/99-monthly/llms.txt): $19.80 per 1,000, 33% complete, live
- [Mailgun, $99 monthly, Optimize Starter, 5,000 validations included, GET /v4/address/validate](https://datacircle.dev/validate-email-apis/mailgun/99-monthly-optimize-starter-5000-validations-included-get-v4-address-validate/llms.txt): $19.80 per 1,000, 33% complete, stored
- [Dropcontact, €1,169 monthly](https://datacircle.dev/validate-email-apis/dropcontact/1169-monthly/llms.txt): $19.931 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 2026-11-02.

- https://docs.allegrow.co/reference/bulk-csv-overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.allegrow.co/reference/create-csv-validation-job?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.allegrow.co/reference/credits-overview?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.allegrow.co/reference/rate-limits?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://docs.allegrow.co/reference/validation-statuses?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.allegrow.co/b2b-email-verification-api-for-data-providers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.allegrow.co/fair-use-policy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.allegrow.co/integrations/public-email-verification-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.allegrow.co/plans?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.allegrow.co/terms-and-conditions?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://www.allegrow.co/usa-terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing