# SpamCipher, free trial, POST /api/v1/verify: Email verification API

> A REST API for single, batch and file verification, with API keys, clear rate limits and signed webhooks for 44 events.

SpamCipher's Free trial plan for the email verification API costs $0.00 per 1,000 emails. We check each provider's docs for 6 fields. SpamCipher's docs list 1: Deliverability.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), the best plan from SpamCipher scores 45.1 out of 100. SpamCipher ranks 118th of 221 providers.
This plan is free. We rank 4,337 plans for email verification APIs by price. Half the plans cost $2.00 or less per 1,000 emails. [See the best free email verification API plan.](https://datacircle.dev/best-email-verification-api.txt)
[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/spamcipher/free-trial-post-api-v1-verify
- [Email validation API: best verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://spamcipher.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST /api/v1/verify`
- API key: with the plan, on https://spamcipher.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://spamcipher.com/products/real-time-validation-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: SpamCipher (https://spamcipher.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 17%
- Deliverability: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: 30 days
- Also pays for: from the same budget: Email Finder · Domain Health

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: A REST API for single, batch and file verification, with API keys, clear rate limits and signed webhooks for 44 events.

## Data

- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: a limited, revocable, non-exclusive, non-transferable, non-sublicensable license to access and use the Service for your internal business purposes, subject to these Terms. You must not, and must not permit anyone else to: Use the Service to send, facilitate, or support spam, unsolicited bulk email, or any unsolicited messaging, Upload, submit, or process email lists or contact data that you do not have a lawful basis, permission, or required consent to process, Use the Service for any illegal, infringing, deceptive, harassing, or otherwise harmful purpose, or to process unlawful or infringing content, Reverse engineer, decompile, scrape, or attempt to derive the source code of the Service, or use the Service to build or populate a competing product or database, Resell, sublicense, rent, lease, or otherwise share access to the Service except as expressly permitted in writing by us, Introduce malware, viruses, or any malicious or disruptive code into the Service, Attempt to gain unauthorized access to the Service, other accounts, or our systems or networks, Probe, scan, overload, interfere with, or disrupt the integrity or performance of the Service or its infrastructure, or Violate any applicable anti-spam or data-protection law, including CAN-SPAM, Canada's Anti-Spam Legislation (CASL), and the GDPR and ePrivacy rules

## Plan

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

## Rate limit

- Per second: 0.5
- Batch: 1

## Speed

- Answer: in the call
- Median: 2.07 s

## The call

- You send: email
- Method: POST
- Path: /api/v1/verify

## About the plan

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

## The only field the plan's answer can hold

status

## SpamCipher's plans (5)

- [SpamCipher, free trial, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/free-trial-post-api-v1-verify/llms.txt): $0.00 per 1,000, 17% complete
- [SpamCipher, $39 pack, Pay-As-You-Go, 2,000 credits, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/39-pack-pay-as-you-go-2000-credits-post-api-v1-verify/llms.txt): $19.50 per 1,000, 17% complete
- [SpamCipher, $129 pack, Pay-As-You-Go, 10,000 credits, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/129-pack-pay-as-you-go-10000-credits-post-api-v1-verify/llms.txt): $12.90 per 1,000, 17% complete
- [SpamCipher, $94.99 monthly, SpamCipher ONE, 10,000 credits a month, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/94-99-monthly-spamcipher-one-10000-credits-a-month-post-api-v1-verify/llms.txt): $9.499 per 1,000, 17% complete
- [SpamCipher, contact us, Pay-As-You-Go, over 1,000,000 credits, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/contact-us-pay-as-you-go-over-1000000-credits-post-api-v1-verify/llms.txt): 17% complete

## SpamCipher's calls for this API (2)

- Docs behind sign-up: [SpamCipher, free trial, 100 credits](https://datacircle.dev/validate-email-apis/spamcipher/free-trial-100-credits/llms.txt)
- `POST /api/v1/verify`: [SpamCipher, free trial, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/free-trial-post-api-v1-verify/llms.txt)

## SpamCipher's APIs (2)

- [SpamCipher: email finder API pricing, 5 plans](https://datacircle.dev/find-email-apis/spamcipher/free/llms.txt)
- [SpamCipher: email verification API pricing, 5 plans, POST /api/v1/verify](https://datacircle.dev/validate-email-apis/spamcipher/free-trial-post-api-v1-verify/llms.txt)

## SpamCipher: email verification API alternatives

- [Email Hippo, $284.55 yearly, MORE 2,500 Edition 2 (Annually)](https://datacircle.dev/validate-email-apis/email-hippo/284-55-yearly-more-2500-edition-2-annually/llms.txt): $9.485 per 1,000, 67% complete, 30 days
- [Anymail Finder, $228 yearly](https://datacircle.dev/validate-email-apis/anymail-finder/228-yearly/llms.txt): $9.50 per 1,000, 17% complete, live
- [SyncGTM, $95 pack](https://datacircle.dev/validate-email-apis/syncgtm/95-pack/llms.txt): $9.50 per 1,000, 33% complete
- [MiN8T, $19 pack](https://datacircle.dev/validate-email-apis/min8t/19-pack/llms.txt): $9.50 per 1,000, 67% 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 2026-11-07.

- https://spamcipher.com/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/developers?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/help/billing/buy-credits-change-plan-invoices?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/help/billing/credits-what-uses-them?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/help/verification/bulk-check-a-list?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/help/verification/check-email-address?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/help/verification/verification-results?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/products/email-finder?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/products/email-validation?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/products/real-time-validation-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://spamcipher.com/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing