# BounceShift, free, POST /validate/single: Email verification API

> Every bounce chips away at your sender reputation. BounceShift checks each address before you hit send and tells you which ones are invalid, disposable, role-based, or catch-all.

BounceShift's email verification API on its Free plan. It costs $0.00 per 1,000 emails. It returns 3 of the 6 key fields we check: Address, Deliverability, Confidence.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), the best plan from BounceShift scores 61.7 out of 100. BounceShift ranks 29th of 189 providers.
This plan is free. We rank 3,886 plans for email verification APIs by price. Half the plans cost $1.998 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.
[email-validation.org](https://datacircle.dev/validate-email-apis/email-validation-org/450-pack-1000000-credits-post-v1-validate/llms.txt), [pingutil](https://datacircle.dev/validate-email-apis/pingutil/free-api-key-post-v1-verify/llms.txt) and [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/bounceshift/free-post-validate-single
- [Email validation API: 180+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://bounceshift.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.bounceshift.com/v1/validate/single`
- API key: with the plan, on https://bounceshift.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://bounceshift.com/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing#/operations/validate-single
- Sold by: BounceShift (https://bounceshift.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-02

## In the answer

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

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Create Batch Validation

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Every bounce chips away at your sender reputation. BounceShift checks each address before you hit send and tells you which ones are invalid, disposable, role-based, or catch-all.

## Data

- Freshness: 24 hours
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: 3.1 You May: Use the service to validate email addresses you have legitimate access to, Integrate our API into your applications, Connect your ESP webhooks to track reputation data [...] 3.2 You May Not: Use the service for any illegal purpose, Validate email addresses obtained through illegal means, Attempt to reverse-engineer, decompile, or hack our systems, Resell or redistribute our service without authorization, Use the service to facilitate spam or unsolicited bulk email, Exceed rate limits or attempt to circumvent usage restrictions, Share API keys or account credentials with unauthorized parties

## Plan

- Pay: $0
- You get: 100 credits
- Enough for: 100 calls, once
- Expires: never

## Rate limit

- Per second: 1
- Batch: 1

## Speed

- Answer: in the call
- Median: 3.34 s

## The call

- You send: email, X-Organization-ID header
- Method: POST
- Path: /validate/single

## About the plan

- Plan: Free
- Who can get it: anyone at least 18 years old, one free account per person or legal entity

## The 17 fields the plan's answer can hold

email, status, sub-status, did you mean, recommendation, send priority, quality score, explanation, confidence, MX found, SMTP valid, disposable, catch-all, role address, from cache, credits used, result

## BounceShift's plans (13)

- [BounceShift, free, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/free-post-validate-single/llms.txt): $0.00 per 1,000, 50% complete, 24 hours
- [BounceShift, $8 pack, 1,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/8-pack-1000-credits-post-validate-single/llms.txt): $8.00 per 1,000, 50% complete, 24 hours
- [BounceShift, $30 pack, 5,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/30-pack-5000-credits-post-validate-single/llms.txt): $6.00 per 1,000, 50% complete, 24 hours
- [BounceShift, $49 pack, 10,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/49-pack-10000-credits-post-validate-single/llms.txt): $4.90 per 1,000, 50% complete, 24 hours
- [BounceShift, $99 pack, 25,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/99-pack-25000-credits-post-validate-single/llms.txt): $3.96 per 1,000, 50% complete, 24 hours
- [BounceShift, $175 pack, 50,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/175-pack-50000-credits-post-validate-single/llms.txt): $3.50 per 1,000, 50% complete, 24 hours
- [BounceShift, $250 pack, 100,000 credits, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/250-pack-100000-credits-post-validate-single/llms.txt): $2.50 per 1,000, 50% complete, 24 hours
- [BounceShift, $29 monthly, Starter, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/29-monthly-starter-post-validate-single/llms.txt): $2.90 per 1,000, 50% complete, 24 hours
- [BounceShift, $79 monthly, Growth, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/79-monthly-growth-post-validate-single/llms.txt): $1.58 per 1,000, 50% complete, 24 hours
- [BounceShift, $199 monthly, Scale, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/199-monthly-scale-post-validate-single/llms.txt): $1.327 per 1,000, 50% complete, 24 hours
- [BounceShift, $289 yearly, Starter, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/289-yearly-starter-post-validate-single/llms.txt): $2.408 per 1,000, 50% complete, 24 hours
- [BounceShift, $790 yearly, Growth, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/790-yearly-growth-post-validate-single/llms.txt): $1.317 per 1,000, 50% complete, 24 hours
- [BounceShift, $1,990 yearly, Scale, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/1990-yearly-scale-post-validate-single/llms.txt): $1.106 per 1,000, 50% complete, 24 hours

## BounceShift's calls (2)

- `POST /validate/batch`: [BounceShift, free, POST /validate/batch](https://datacircle.dev/validate-email-apis/bounceshift/free-post-validate-batch/llms.txt)
- `POST /validate/single`: [BounceShift, free, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/free-post-validate-single/llms.txt)

## BounceShift's APIs (1)

- [BounceShift: email verification API pricing, 13 plans, POST /validate/single](https://datacircle.dev/validate-email-apis/bounceshift/free-post-validate-single/llms.txt)

## BounceShift: email verification API alternatives

- [Clearout, $5,500 pack, 5 million credits, POST /email_verify/instant, Instant Verify](https://datacircle.dev/validate-email-apis/clearout/5500-pack/llms.txt): $1.10 per 1,000, 50% complete, live
- [Verifalia, $626.85 quarterly](https://datacircle.dev/validate-email-apis/verifalia/626-85-quarterly/llms.txt): $1.102 per 1,000, 67% complete, live
- [MyEmailVerifier, top-up from $29, Pay-As-You-Go, 25,000 emails + 1,250 bonus, GET /verifier/validate_single/{email}/{API_KEY}](https://datacircle.dev/validate-email-apis/myemailverifier/top-up-from-29-pay-as-you-go-25000-emails-1250-bonus-get-verifier-validate-single-email-api-key/llms.txt): $1.105 per 1,000, 33% complete, live
- [SafetyMails, $887 monthly](https://datacircle.dev/validate-email-apis/safetymails/887-monthly/llms.txt): $1.109 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://bounceshift.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bounceshift.com/developers/quickstart?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bounceshift.com/developers/status-codes?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bounceshift.com/docs/api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bounceshift.com/docs/api.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bounceshift.com/privacy-policy?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://bounceshift.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing