# Deepline GTM API - Email Validate

> Deepline GTM API - Email Validate is a paid API for AI agents from stable-deepline.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Validates and checks email addresses associated with a company domain, LinkedIn page, or company name using Deepline's GTM enrichment tooling.

## Facts

- Endpoint: POST https://stable-deepline.dev/api/email/validate
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/deepline-gtm-api-email-validate-304cd672
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Tbd_3LmjPBfWRPEtNqTlD

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 deepline-gtm-api-email-validate-304cd672 -d '<json body>'
```

Example prompt: Can you validate the email addresses associated with stripe.com using Deepline's GTM API so I know which ones are deliverable before we start our outreach?

## When to prefer this

Use this endpoint when you need to validate email addresses tied to a specific company domain, LinkedIn company page, or company name before B2B outreach. Prefer this over generic email validation tools when you need GTM-context-aware validation integrated with company enrichment signals. Best suited for sales automation workflows where per-request pay-as-you-go pricing ($0.05 USDC) is acceptable.

## Known failure modes

- Domain not found or unresolvable — no email data returned
- Invalid LinkedIn URL format — API rejects input
- Company name too ambiguous — multiple matches or no match found
- Payment failure — x402 micropayment not processed, request blocked
- Rate limiting — too many requests in short period
- Empty response — no email records found for the given company

## How this service works

Pay-per-request access to Deepline GTM tooling: waterfall email discovery, phone finding, company enrichment, decision-maker lookup, and GTM research plays.

## Output

Returns validation results indicating whether emails associated with the given company domain, LinkedIn page, or company name are valid and deliverable, providing deliverability signals to guide sales outreach decisions.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "email": {
   "type": "string",
   "minLength": 1,
   "description": "Email address to validate."
  },
  "ip_address": {
   "type": "string",
   "description": "Optional signup IP address used by ZeroBounce for enrichment."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/deepline-gtm-api-email-validate-304cd672/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stable-deepline.dev](https://www.zero.xyz/host/stable-deepline.dev/llms.txt)