# sendsets

> sendsets — addisonhoff-sendsets. Use this tool when you need to automate cold email sending through a robust API, solving problems of manual email outreach and integration with AI agents. It accepts inputs such as email templates and recipient lists, and outputs sent email metrics and responses. Ideal for use cases requiring automated email campaigns, especially when integrated with AI agents and remote servers.

Canonical page: https://skillsregistry.net/skills/addisonhoff-sendsets  
JSON: https://api.skillsregistry.net/v1/skills/addisonhoff-sendsets

## Description

Sendsets: the cold email API for AI agents. Remote MCP server, Claude Code plugin, agent skills (SKILL.md), CLI and OpenAPI.

## Trust

- **Trust score (0–1):** 1.00
- **Verification tier:** verified
- **Last scanned:** 2026-09-28

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **License:** Apache-2.0
- **Updated:** 2026-09-28

## Source

- **Source listing:** [GitHub](https://github.com/AddisonHoff/sendsets)

## 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": "addisonhoff-sendsets"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/addisonhoff-sendsets` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/addisonhoff-sendsets/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