# Tomba Email Sources

> Tomba Email Sources is a paid API for AI agents from Tomba API at mpp.orthogonal.com, paid per call via MPP, $0.01/call, status unknown (last checked 2026-10-12).

Returns a list of web sources where a given email address was discovered or found online.

## Facts

- Endpoint: GET https://mpp.orthogonal.com/tomba/v1/email-sources?utm_source=zero.xyz
- Price: $0.01/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Provider: Tomba API
- Docs: https://api.tomba.io
- Website: https://api.tomba.io
- Tags: email, verification, finder, data
- Canonical page: https://www.zero.xyz/c/tomba-api-tomba-email-sources-833d818c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-PrdDQYLbn_jlmkaNtbdG

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability tomba-api-tomba-email-sources-833d818c
```

Example prompt: Can you look up where the email address john.smith@acmecorp.com has been found on the web — I want to see all the source URLs where Tomba discovered it?

## When to prefer this

Use this endpoint when you need to understand the provenance of an email address — specifically which public web pages or sources it was scraped or collected from. Ideal for OSINT investigations, data hygiene audits, and verifying whether an email is legitimately public. Prefer this over the Email Verifier endpoint when you want source attribution rather than deliverability status.

## Known failure modes

- Email address not found in Tomba's index — returns empty sources list
- Invalid email format — returns validation error
- Insufficient account credits — returns payment/authorization error
- Rate limit exceeded — returns 429 Too Many Requests
- Email address belongs to a private domain with no web footprint — empty results

## How this service works

Find the sources where an email was found on the web.

## Output

A list of web sources (URLs and page metadata) where the queried email address was discovered or indexed, indicating the origin and context in which the email appears online.

## Example request

```json
{
 "email": "john.smith@example.com"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tomba-api-tomba-email-sources-833d818c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mpp.orthogonal.com](https://www.zero.xyz/host/mpp.orthogonal.com/llms.txt)