# smtp-mcp

> smtp-mcp — ni-c-smtp-mcp. Use this tool when you need to send emails securely and reliably, with the smtp-mcp server providing a gated SMTP service that requires allowlist validation and human confirmation. It solves problems of unauthorized email sending and spam prevention, allowing for controlled email distribution. Ideal for use cases where email sending needs to be authenticated and validated, with inputs including email content and recipient lists, and outputs of sent emails and confirmation status.

Canonical page: https://skillsregistry.net/skills/ni-c-smtp-mcp  
JSON: https://api.skillsregistry.net/v1/skills/ni-c-smtp-mcp

## Description

MCP server that sends mail over SMTP, gated behind an allowlist and a human confirmation

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** MIT
- **Updated:** 2026-09-22

## Source

- **Source listing:** [GitHub](https://github.com/ni-c/smtp-mcp)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "ni-c-smtp-mcp"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/ni-c-smtp-mcp` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/ni-c-smtp-mcp/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt