Introduction - SendKit

SendKit provides a built-in MCP (Model Context Protocol) server that lets AI coding assistants manage your email infrastructure directly. Your AI assistant can create domains, manage contacts, send emails, and more — all through natural language.

What is MCP?

MCP is an open protocol that connects AI assistants to external tools and data sources. Instead of copying and pasting API calls, your AI assistant can interact with SendKit directly.

Available tools

SendKit exposes 60 tools across 13 categories:

Category	Tools	Description
Emails	List, Get, Send, Validate	List and inspect sent emails, send transactional emails, and validate addresses
Domains	List, Get, Create, Update, Delete, Verify	Manage sending domains and DNS verification
Automations	List, Get, Create, Update, Delete	Manage email automations and workflows
Campaigns	List, Get, Create, Update, Delete	Manage email marketing campaigns
Senders	List, Get, Create, Update, Delete	Manage sender identities
Templates	List, Get, Create, Update, Delete	Manage email templates
Contacts	List, Get, Create, Update, Delete, Add to lists, Remove from list, Get lists	Full contact management
Lists	List, Get, Create, Update, Delete	Manage contact lists
Properties	List, Create, Update, Delete	Manage custom contact properties
Segments	List, Get, Create, Update, Delete	Manage contact segments with filters
Suppressions	List, Create, Delete	Manage the suppression list
API Keys	List, Create, Delete	Manage API keys
Metrics	Get Metrics, Get Reputation	Sending metrics and reputation status

How it works

Get your API key

Create an API key from the SendKit dashboard. You need a Full permission key.

Configure your AI assistant

Add the SendKit MCP server to your assistant’s configuration using the server URL and your API key.

Start using natural language

Ask your assistant to manage your SendKit account. For example: “Create a new sender called Support on my domain” or “List all contacts subscribed to the newsletter list.”

Server URL

https://mcp.sendkit.dev/sendkit

Authentication uses the same API keys as the REST API, passed as a Bearer token.

Next steps

Claude Code

CLI assistant by Anthropic.

Claude Desktop

Desktop app by Anthropic.

Cursor

AI-powered code editor.

Windsurf

Editor with Cascade AI.

VS Code

VS Code with MCP extensions.

GitHub Copilot

Copilot agent mode.

Gemini CLI

CLI assistant by Google.

OpenCode

Open-source CLI assistant.

Codex

CLI agent by OpenAI.

Antigravity

AI agent by Google.

Tools reference

​What is MCP?

​Available tools

​How it works

​Server URL

​Next steps