# CampaignKit

> Use this tool when you need to verify email addresses in real-time or in batches to reduce bounce rates and protect sender reputation. CampaignKit solves email validation problems by checking format, deliverability, and domain verification, among others, and provides outputs such as validation results and account statistics through a JSON-RPC 2.0 interface. It is ideal for marketers and developers who want to ensure accurate email lists and minimize email delivery issues.

Canonical page: https://skillsregistry.net/skills/campaignkit  
JSON: https://api.skillsregistry.net/v1/skills/campaignkit

## Description

CampaignKit's official email validation server provides real-time and batch email verification through five specialized tools covering single email validation, asynchronous batch processing for large lists, job status monitoring, paginated results retrieval, and account statistics tracking. The implementation uses Server-Sent Events over HTTPS for transport with JSON-RPC 2.0 messaging, enabling validation checks for email format, deliverability, disposable/temporary domains, catch-all addresses, and domain verification. Built for marketers and developers who need to reduce bounce rates and protect sender reputation, it operates on a credits-based model where users only pay for successfully validated emails.

## Trust

- **Trust score (0–1):** 0.30
- **Verification tier:** unverified
- **Last scanned:** 2026-09-02

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** communication
- **Updated:** 2026-09-02

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/campaignkit)

## 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": "campaignkit"
    }
  }
}
```

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