# CIEL M2M API Marketplace – Email Warmup

> CIEL M2M API Marketplace – Email Warmup is a paid API for AI agents from 169.58.38.67.sslip.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-18).

Warms up an email address or domain to improve deliverability and sender reputation over time

## Facts

- Endpoint: POST https://169.58.38.67.sslip.io/api/email-warmup
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ciel-m2m-api-marketplace-email-warmup-d533fca7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sV52IDdsm_Q7qCqsJIfTZ

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 ciel-m2m-api-marketplace-email-warmup-d533fca7 -d '<json body>'
```

Example prompt: Can you warm up my email address contact@mycompany.com so my outreach campaigns don't land in spam — start the warmup process with default settings.

## When to prefer this

Choose this endpoint when you need a pay-per-call (USDC on Base via x402) email warmup microservice without committing to a full SaaS subscription. Best suited for AI agents that need programmatic, on-demand email warmup as part of an outreach automation workflow, especially when operating in the x402 micropayment ecosystem.

## Known failure modes

- Invalid or missing email address in request body returns an error
- Malformed properties object causes a 400 bad request
- Payment failure via x402/USDC results in 402 Payment Required
- Server unreachable at IP-based sslip.io domain causes connection timeout
- Unsupported email domain may return a processing error

## How this service works

50+ micro-services for AI agents: data parsing, crypto analytics, security scanning, code tools, and more. Pay per call via x402 (USDC on Base) or RapidAPI subscription.

## Output

Returns a JSON result indicating the outcome of the email warmup initiation or status update, including any relevant warmup metrics or confirmation data about the sender address being processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": "data"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ciel-m2m-api-marketplace-email-warmup-d533fca7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 169.58.38.67.sslip.io](https://www.zero.xyz/host/169.58.38.67.sslip.io/llms.txt)