# Catch-all Verifier, free trial, POST /api/v1/verify/single: Email verification API

> The Email Verification API allows developers validate the authenticity and deliverability of email addresses in both single and bulk modes.

Catch-all Verifier'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 haven't run Catch-all Verifier through [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt) yet.
This plan is free. We rank 3,753 plans for email verification APIs by price. Half the plans cost $1.98 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/catch-all-verifier/free-trial-post-api-v1-verify-single
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://catchallverifier.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://app.catchallverifier.com/api/v1/verify/single`
- API key: with the plan, on https://catchallverifier.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://catchallverifier.readme.io/reference/post_api-v1-verify-single?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: Catch-all Verifier (https://catchallverifier.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-05

## 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: from the same budget: Verify multiple emails

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: The Email Verification API allows developers validate the authenticity and deliverability of email addresses in both single and bulk modes.

## Data

- Freshness: live
- What it checks: mailbox
- Keep data: no API terms
- Use data: no API terms

## Plan

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

## Rate limit

- Batch: 1

## Speed

- Answer: by polling or webhook

## The call

- You send: email. Optional: webhook
- Method: POST
- Path: /api/v1/verify/single

## About the plan

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

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

email address, status

## Catch-all Verifier's plans (7)

- [Catch-all Verifier, free trial, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/free-trial-post-api-v1-verify-single/llms.txt): $0.00 per 1,000, 33% complete, live
- [Catch-all Verifier, $25 pack, 2,500 Credits, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/25-pack-2500-credits-post-api-v1-verify-single/llms.txt): $10.00 per 1,000, 33% complete, live
- [Catch-all Verifier, $35 pack, 5,000 Credits, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/35-pack-5000-credits-post-api-v1-verify-single/llms.txt): $7.00 per 1,000, 33% complete, live
- [Catch-all Verifier, $49 pack, 10,000 Credits, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/49-pack-10000-credits-post-api-v1-verify-single/llms.txt): $4.90 per 1,000, 33% complete, live
- [Catch-all Verifier, $119 pack, 25,000 Credits, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/119-pack-25000-credits-post-api-v1-verify-single/llms.txt): $4.76 per 1,000, 33% complete, live
- [Catch-all Verifier, $225 pack, 50,000 Credits, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/225-pack-50000-credits-post-api-v1-verify-single/llms.txt): $4.50 per 1,000, 33% complete, live
- [Catch-all Verifier, $399 pack, 100,000 Credits, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/399-pack-100000-credits-post-api-v1-verify-single/llms.txt): $3.99 per 1,000, 33% complete, live

## Catch-all Verifier's calls (2)

- `POST /api/v1/verify/single`: [Catch-all Verifier, free trial, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/free-trial-post-api-v1-verify-single/llms.txt)
- `POST /api/v1/verify/bulk`: [Catch-all Verifier, free trial, POST /api/v1/verify/bulk](https://datacircle.dev/validate-email-apis/catch-all-verifier/free-trial-post-api-v1-verify-bulk/llms.txt)

## Catch-all Verifier's APIs (1)

- [Catch-all Verifier: email verification API pricing, 7 plans, POST /api/v1/verify/single](https://datacircle.dev/validate-email-apis/catch-all-verifier/free-trial-post-api-v1-verify-single/llms.txt)

## Catch-all Verifier: email verification API alternatives

- [GetProspect, $399 monthly, Growth 50k, POST /v2/email-verifications](https://datacircle.dev/validate-email-apis/getprospect/399-monthly-growth-50k-post-v2-email-verifications/llms.txt): $3.99 per 1,000, 50% complete, live
- [EnvoAPI, $499 monthly, Scale, GET /v1/emails/verify](https://datacircle.dev/validate-email-apis/envoapi/499-monthly-scale-get-v1-emails-verify/llms.txt): $3.992 per 1,000, 50% complete, live
- [ZeroBounce, $999 monthly, ZeroBounce ONE, 250,000 credits a month, POST /v2/validatebatch](https://datacircle.dev/validate-email-apis/zerobounce/999-monthly-zerobounce-one-250000-credits-a-month-post-v2-validatebatch/llms.txt): $3.996 per 1,000, 83% complete, live
- [Email Verifier API, $399.95 pack](https://datacircle.dev/validate-email-apis/email-verifier-api/399-95-pack/llms.txt): $4.00 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 2026-11-05.

- https://app.catchallverifier.com/register?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.com/api-doc?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.com/privacy-policy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.readme.io/llms.txt?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.readme.io/reference/get_api-v1-verify-single?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.readme.io/reference/post_api-v1-verify-bulk?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://catchallverifier.readme.io/reference/post_api-v1-verify-single?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing