# Tracerfy, top-up, Pay-As-You-Go, POST /v1/api/email-append/: Reverse email lookup API

> Upload CSV files with thousands of emails. Bulk batch processing ensures fast turnaround and maximum efficiency.

Tracerfy's reverse email lookup API on its Pay-As-You-Go plan. It costs $100.00 per 1,000 people. It returns none of the 13 key fields we check: Experience, Education, Skills, Headline and 9 more.
We haven't run Tracerfy through [our reverse email lookup API benchmark](https://datacircle.dev/best-reverse-email-lookup-api.txt) yet.
Half of the 396 plans we rank by price cost $24.875 per 1,000 people or less. This plan costs less per 1,000 people than 20% of the 396 plans.
[Minerva's $400 monthly plan](https://datacircle.dev/reverse-email-lookup-apis/minerva/400-monthly/llms.txt) costs the least per 1,000 people. Minerva's reverse email lookup API costs nothing beyond the plan price.
[Village's $25 pack (Reverse Lookup by Email, cached only)](https://datacircle.dev/reverse-email-lookup-apis/village/25-pack-1000-credits-post-v2-people-enrich-by-email-reverse-lookup-by-email-cached-only/llms.txt) covers any number of people. Village's $25 pack costs less up front than Minerva's $400 monthly plan.
[GetProspect](https://datacircle.dev/reverse-email-lookup-apis/getprospect/399-monthly-growth-50k-post-v2-people-enrich/llms.txt), [Village](https://datacircle.dev/reverse-email-lookup-apis/village/1-monthly/llms.txt) and [treg](https://datacircle.dev/reverse-email-lookup-apis/treg/top-up-from-200/llms.txt) are the best reverse email lookup API providers in the Datacircle benchmark.

- This page: https://datacircle.dev/reverse-email-lookup-apis/tracerfy/top-up-pay-as-you-go-post-v1-api-email-append
- [Reverse email lookup API: 30+ providers compared](https://datacircle.dev/best-reverse-email-lookup-api.txt)
- Get it: https://tracerfy.com/email-append?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing
- Request: `POST https://app.fastappend.com/v1/api/email-append/`
- API key: with the plan, on https://tracerfy.com/email-append?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing
- Its API docs: https://app.fastappend.com/api-docs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing#email-append-create
- Sold by: Tracerfy (https://www.tracerfy.com?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing)
- Checked: 2026-11-04

## In the answer

- Completeness: 0%

## Price

- $ per 1,000 people: $100.00
- Per: result
- Billing: pay first

## Aggregators

- Aggregators: none

## Charges

- Also pays for: from the same budget: Create Business Trace Job · Synchronous Business Trace · Create Phone Append Job · Create Name Append Job · Reverse Phone Append Lookup · Reverse Email Append Lookup · Reverse Name Append Lookup

## Not found

- $ per 1,000: $0.00

## In their words

- Their pitch: Upload CSV files with thousands of emails. Bulk batch processing ensures fast turnaround and maximum efficiency.

## Data

- Keep data: no limit
- Use data: Data obtained through Tracerfy is licensed for Customer's internal business use and lawful delivery to Customer's contracted end users only. Customer may NOT resell, redistribute, sublicense, or share data with third parties without express written permission from Tracerfy, and may NOT offer Tracerfy data as a standalone data feed, database, directory, or raw data resale product. Customer must include equivalent use restrictions in its agreements with any end users who receive Tracerfy data. [...] Data provided by Tracerfy may NOT be used for: Credit decisions or eligibility determinations, Employment screening or background checks, Insurance underwriting or eligibility, Tenant screening or housing decisions, Debt collectability, consumer risk, or adverse-action decisions, Any purpose regulated under FCRA [...] PROHIBITED USES - Customers may NOT use Tracerfy data for: Robocalling or autodialed calls without proper consent, Telemarketing to numbers on DNC registries without legal exemption, Harassment, threats, or illegal activities, Stalking, coercion, intimidation, or pressure tactics involving property owners, relatives, associates, employers, or other third parties, Using relatives, associated persons, employer data, or public-record indicators for background screening, eligibility decisions, debt collectability, or adverse action, Any purpose that violates TCPA, FDCPA, FCRA, or state consumer protection laws, Reselling, redistributing, or sharing data with third parties, Offering Tracerfy data as a standalone data feed, database, directory, sublicensed product, or raw data resale product, Automated scraping or harvesting of Tracerfy's website or services, Reverse engineering or attempting to access source code, Transmitting malware, viruses, or harmful code

## Rate limit

- Batch: no limit

## Speed

- Answer: by polling or webhook

## The call

- You send: csv_file, email_column, Content-Type header "multipart/form-data"
- Method: POST
- Path: /v1/api/email-append/

## About the plan

- Plan: Pay-As-You-Go
- Who can get it: anyone

## The 18 fields the plan's answer can hold

first name, middle name, last name, mailing address, phone, phone type, phone DNC flag, phone TCPA flag, phone state DNC codes, phone contactable, email, age, deceased, download URL, phones checked, phones flagged, rows uploaded, credits deducted

## Tracerfy's plans (2)

- [Tracerfy, top-up, Pay-As-You-Go, POST /v1/api/email-append/](https://datacircle.dev/reverse-email-lookup-apis/tracerfy/top-up-pay-as-you-go-post-v1-api-email-append/llms.txt): $100.00 per 1,000, 0% complete
- [Tracerfy, contact us, Enterprise, POST /v1/api/email-append/](https://datacircle.dev/reverse-email-lookup-apis/tracerfy/contact-us-enterprise-post-v1-api-email-append/llms.txt): 0% complete

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

- `POST /v1/api/email-append/`: [Tracerfy, top-up, Pay-As-You-Go, POST /v1/api/email-append/](https://datacircle.dev/reverse-email-lookup-apis/tracerfy/top-up-pay-as-you-go-post-v1-api-email-append/llms.txt)
- `POST /v1/api/reverse-email-append/lookup/`: [Tracerfy, top-up, Pay-As-You-Go, POST /v1/api/reverse-email-append/lookup/](https://datacircle.dev/reverse-email-lookup-apis/tracerfy/top-up-pay-as-you-go-post-v1-api-reverse-email-append-lookup/llms.txt)

## Tracerfy's APIs (2)

- [Tracerfy: reverse email lookup API pricing, 2 plans, POST /v1/api/email-append/](https://datacircle.dev/reverse-email-lookup-apis/tracerfy/top-up-pay-as-you-go-post-v1-api-email-append/llms.txt)
- [Tracerfy: phone validation API pricing, 5 plans](https://datacircle.dev/validate-phone-apis/tracerfy/top-up-from-20/llms.txt)

## Tracerfy: reverse email lookup API alternatives

- [LeadMagic, $499 monthly](https://datacircle.dev/reverse-email-lookup-apis/leadmagic/499-monthly/llms.txt): $99.80 per 1,000, 0% complete, stored
- [Forager, $540 yearly](https://datacircle.dev/reverse-email-lookup-apis/forager/540-yearly/llms.txt): $100.00 per 1,000, 69% complete, 3 weeks
- [Accurate Append, contact us, Estimated matches 25000](https://datacircle.dev/reverse-email-lookup-apis/accurate-append/contact-us-estimated-matches-25000/llms.txt): $100.00 per 1,000, 8% complete
- [LinkFinder AI, $200 pack](https://datacircle.dev/reverse-email-lookup-apis/linkfinder-ai/200-pack/llms.txt): $100.00 per 1,000, 0% 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 2026-11-04.

- https://app.fastappend.com/api-docs/?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing
- https://tracerfy.com/email-append?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing
- https://www.tracerfy.com/pricing?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing
- https://www.tracerfy.com/skip-tracing-api-documentation/download.md?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing
- https://www.tracerfy.com/terms-of-service?utm_source=datacircle.dev&utm_medium=referral&utm_campaign=reverse-email-lookup-api-pricing