# ToolTrace, free, POST /v1/verify-email/batch: Email verification API

> Run Basic verification for up to 500 email addresses in one request. Duplicate addresses are verified and charged once. Each unique address costs 1 credit.

ToolTrace's Free plan for the email verification API costs $0.00 per 1,000 emails. ToolTrace's docs list 4 of the 6 fields on our checklist: Address, Deliverability, Confidence, Company.
In [our email verification API benchmark](https://datacircle.dev/best-email-verification-api.txt), the best plan from ToolTrace scores 59.2 out of 100. ToolTrace ranks 41st of 208 providers.
This plan is free. We rank 4,039 plans for email verification APIs by price. Half the plans cost $1.999 per 1,000 emails or less. [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.
[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), [MailTester Ninja](https://datacircle.dev/validate-email-apis/mailtester-ninja/23-99-monthly/llms.txt) and [Giggal](https://datacircle.dev/validate-email-apis/giggal/39-pack-50000-credits-post-v1-verify/llms.txt) are the best email verification API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/validate-email-apis/tooltrace/free-post-v1-verify-email-batch
- [Email validation API: 200+ verification providers compared](https://datacircle.dev/best-email-verification-api.txt)
- Get it: https://tooltrace.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Request: `POST https://api.tooltrace.io/v1/verify-email/batch`
- API key: with the plan, on https://tooltrace.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Its API docs: https://api.tooltrace.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- Sold by: ToolTrace (https://tooltrace.io?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing)
- Checked: 2026-11-07

## In the answer

- Completeness: 67%
- Address: ✓
- Deliverability: ✓
- Confidence: ✓
- Company: ✓

## Price

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

## Aggregators

- Aggregators: none

## Charges

- Repeat free: 7 days
- Also pays for: from the same budget: Check an email address · Extract webpage content · Extract page metadata · Extract page links · Extract structured data · Audit webpage SEO · Inspect an XML sitemap and its URLs · Detect website technology stack

## Overage

- Units cap: hard

## Not found

- $ per 1,000: $0.00

## Catch-all

- $ per 1,000: $0.00

## In their words

- Their pitch: Run Basic verification for up to 500 email addresses in one request. Duplicate addresses are verified and charged once. Each unique address costs 1 credit.

## Data

- Freshness: 7 days
- What it checks: format, mail servers, disposable domains, role addresses, mailbox
- Keep data: no limit
- Use data: You may use ToolTrace only for lawful purposes and in line with our Acceptable Use Policy. You must have a lawful basis and any necessary permission to request, store, or process the data you submit. You must respect privacy rights, intellectual property, access restrictions, robots directives, and applicable laws of the jurisdictions whose data you handle. [...] Do not use ToolTrace to access private systems, bypass controls, exploit vulnerabilities, distribute malware, facilitate fraud, impersonate others, harass people, conduct unlawful surveillance, infringe intellectual property, violate privacy rights, create spam, or support phishing.

## Plan

- Pay: $0
- You get: 1,000 credits a month
- Enough for: 1,000 results a month
- Expires: at the end of each billing period

## Rate limit

- Per second: 0.17
- Concurrent: 1
- Batch: 500

## Speed

- Answer: in the call

## The call

- You send: emails
- Method: POST
- Path: /v1/verify-email/batch

## About the plan

- Plan: Free
- Who can get it: anyone aged 16 or over

## The 20 fields the plan's answer can hold

email address, status, score, confidence, syntax check, domain check, MX check, disposable, free, role, catch-all, accept-all, mailbox check, normalized email, MX provider, reasons, credits used, cached, addresses submitted, unique addresses

## ToolTrace's plans (7)

- [ToolTrace, free, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/free-post-v1-verify-email-batch/llms.txt): $0.00 per 1,000, 67% complete, 7 days
- [ToolTrace, $15 pack, Starter pack, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/15-pack-starter-pack-post-v1-verify-email-batch/llms.txt): $1.50 per 1,000, 67% complete, 7 days
- [ToolTrace, $65 pack, Growth pack, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/65-pack-growth-pack-post-v1-verify-email-batch/llms.txt): $1.30 per 1,000, 67% complete, 7 days
- [ToolTrace, $220 pack, Scale pack, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/220-pack-scale-pack-post-v1-verify-email-batch/llms.txt): $1.10 per 1,000, 67% complete, 7 days
- [ToolTrace, $19 monthly, Pro, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/19-monthly-pro-post-v1-verify-email-batch/llms.txt): $1.90 per 1,000, 67% complete, 7 days
- [ToolTrace, $59 monthly, Ultra, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/59-monthly-ultra-post-v1-verify-email-batch/llms.txt): $1.686 per 1,000, 67% complete, 7 days
- [ToolTrace, $149 monthly, Mega, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/149-monthly-mega-post-v1-verify-email-batch/llms.txt): $1.656 per 1,000, 67% complete, 7 days

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

- `POST /v1/verify-email/batch`: [ToolTrace, free, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/free-post-v1-verify-email-batch/llms.txt)
- `POST /v1/verify-email`: [ToolTrace, free, POST /v1/verify-email](https://datacircle.dev/validate-email-apis/tooltrace/free-post-v1-verify-email/llms.txt)

## ToolTrace's APIs (3)

- [ToolTrace: tech stack API pricing, 7 plans](https://datacircle.dev/company-technology-apis/tooltrace/free/llms.txt)
- [ToolTrace: web scraping API pricing, 7 plans](https://datacircle.dev/web-scraping-apis/tooltrace/free/llms.txt)
- [ToolTrace: email verification API pricing, 7 plans, POST /v1/verify-email/batch](https://datacircle.dev/validate-email-apis/tooltrace/free-post-v1-verify-email-batch/llms.txt)

## ToolTrace: email verification API alternatives

- [TryVerifyEmail, $110 pack, Top-up credits 100,000, POST /v1/bulk-verifications/{jobId}/items](https://datacircle.dev/validate-email-apis/tryverifyemail/110-pack-top-up-credits-100000-post-v1-bulk-verifications-jobid-items/llms.txt): $1.10 per 1,000, 67% complete, live
- [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
- [Truelist, $55 pack, Pay as you go, up to 50k, POST /api/v1/verify_inline](https://datacircle.dev/validate-email-apis/truelist/55-pack-pay-as-you-go-up-to-50k-post-api-v1-verify-inline/llms.txt): $1.10 per 1,000, 50% complete, live
- [ApexVerify, $550 pack, 500,000 credits, POST /v1/batch](https://datacircle.dev/validate-email-apis/apexverify/550-pack-500000-credits-post-v1-batch/llms.txt): $1.10 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 2026-11-07.

- https://api.tooltrace.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://api.tooltrace.io/openapi.json?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://tooltrace.io/acceptable-use?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://tooltrace.io/apis?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://tooltrace.io/apis/email-verification-api?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://tooltrace.io/docs?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://tooltrace.io/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing
- https://tooltrace.io/terms?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=email-verification-api-pricing