# Tomba Email Verifier

> Tomba Email Verifier 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).

Verifies the deliverability of an email address, checking whether it can actually receive mail.

## Facts

- Endpoint: GET https://mpp.orthogonal.com/tomba/v1/email-verifier?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-verifier-7f69680b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nxWHIvHMTsooIjiVmo8Vq

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-verifier-7f69680b
```

Example prompt: Can you verify whether john.smith@acmecorp.com is a deliverable email address before I add it to my outreach list?

## When to prefer this

Use this endpoint when you need to confirm that a specific email address can actually receive mail before including it in outreach, a mailing list, or a CRM. Prefer this over a syntax-only validation when you need real deliverability assurance, including SMTP and MX-level checks. Particularly useful for reducing bounce rates, cleaning contact lists, and qualifying leads.

## Known failure modes

- Invalid or malformed email address provided — returns error indicating bad input
- Email domain does not exist or has no MX records — returns undeliverable result
- Catch-all mail server detected — deliverability cannot be confirmed definitively
- Temporary SMTP timeout or server unavailability — may return inconclusive result
- Rate limit exceeded — returns 429 error
- Authentication failure — returns 401/403 if API key is missing or invalid

## How this service works

Verify the deliverability of an email address.

## Output

Returns a deliverability assessment for the given email address, including whether the email is valid, safe to send to, and likely to be received — along with supporting signals such as MX record status, SMTP verification result, and any flags like disposable or catch-all domains.

## Example request

```json
{
 "email": "test.user@example.com"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/tomba-api-tomba-email-verifier-7f69680b/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)