Mailzzy

Mailzzy MCP Server

Connect Claude, ChatGPT, Cursor, VS Code and other MCP clients to your Mailzzy account. Ask your assistant to build an audience, draft a campaign, check it against your sending limits, send a test, and schedule it, then pull the performance report when it goes out.

This is a hosted MCP server. There is nothing to install or run: point your client at the URL below and sign in with your Mailzzy account.

https://api.mailzzy.com/crm/mcp/

Documentation	https://mailzzy.com/docs/#mcp-overview
Transport	Streamable HTTP
Authentication	OAuth 2.1 with PKCE and dynamic client registration (sign in with Mailzzy)
Tools	49 (full list)
Account needed	Yes, a Mailzzy account (sign up)
Registry name	com.mailzzy/mcp

This repository holds documentation and the registry manifest only. The server itself is operated by SoftSages and is not open source.

What you can do

• Campaigns: draft, update, send a test to yourself, send now or schedule, and cancel a scheduled campaign.
• Audiences: pick groups, segments or tags, see the de-duplicated recipient count, and check it against your daily and monthly sending limits before you send.
• Contacts: create, update, tag, group, archive, bulk-import from CSV, and export a segment or group as CSV.
• Segments: build saved filters, preview how many contacts match, then save them.
• Templates and automations: create and edit email templates and automation workflows.
• Transactional email: send a one-to-one email and read delivery logs.
• Reports: campaign metrics, performance over a date range, and per-domain deliverability.

Example prompts

• "Show me my last five campaigns and their open rates."
• "Create a segment of contacts tagged webinar-sept who opened anything in the last 30 days, and tell me how many that is."
• "Draft a campaign announcing our October sale to that segment, send me a test, and schedule it for Tuesday 10am my time."
• "Which recipient domains are bouncing most this month?"

Listings

• Official MCP Registry as com.mailzzy/mcp
• Smithery
• Glama
• mcpi (connection status and client compatibility)
• Awesome Remote MCP Servers
• mcpservers.org
• MCP Server Spot
• MCP Marketplace
• AgentShare
• Cursor Directory
• LobeHub
• TensorBlock MCP Index

Connect your client

Claude (claude.ai, desktop and mobile)

Settings > Connectors > Add custom connector, paste https://api.mailzzy.com/crm/mcp/, then Connect and sign in.

Claude Code

claude mcp add --transport http mailzzy https://api.mailzzy.com/crm/mcp/

Then run /mcp inside Claude Code and choose Authenticate.

ChatGPT

Settings > Apps and Connectors > Advanced > turn on Developer mode, then Create a connector with the URL https://api.mailzzy.com/crm/mcp/ and authentication OAuth.

Cursor

~/.cursor/mcp.json:

{
  "mcpServers": {
    "mailzzy": {
      "url": "https://api.mailzzy.com/crm/mcp/"
    }
  }
}

VS Code (GitHub Copilot agent mode)

.vscode/mcp.json:

{
  "servers": {
    "mailzzy": {
      "type": "http",
      "url": "https://api.mailzzy.com/crm/mcp/"
    }
  }
}

Cline

In the Cline panel open MCP Servers > Configure > Remote Servers, then add:

• Server Name: mailzzy
• Server URL: https://api.mailzzy.com/crm/mcp/
• Transport Type: Streamable HTTP

Or edit cline_mcp_settings.json directly (Configure > Configure MCP Servers):

{
  "mcpServers": {
    "mailzzy": {
      "type": "streamableHttp",
      "url": "https://api.mailzzy.com/crm/mcp/",
      "disabled": false,
      "autoApprove": []
    }
  }
}

Sign in with your Mailzzy account when Cline opens the browser. If the server shows an authentication error, remove it and add it again to restart the sign-in. Setup notes written for Cline itself are in llms-install.md.

Any other MCP client

Use the URL with Streamable HTTP transport. The server answers unauthenticated requests with 401 and a WWW-Authenticate header pointing at its protected resource metadata, so any client that follows the MCP authorization spec can discover the authorization server and register itself.

Authentication and permissions

• You sign in on Mailzzy's own login page. Your password is never shared with the AI client.
• The client receives a short-lived access token scoped to your account. Every tool call acts as you and can only see your own account's data.
• Scopes advertised: mcp:read, mcp:write, mcp:send.
• Every tool carries MCP annotations. Read tools are marked read-only. Sending a campaign or transactional email, deleting a contact, and cancelling a campaign are marked destructive, so well-behaved clients ask you to confirm before running them.
• To disconnect, remove the connector in your client.

Privacy and security

• Privacy policy: https://www.mailzzy.com/privacy-policy/
• Terms of use: https://www.mailzzy.com/terms-of-use/
• Report a vulnerability: see SECURITY.md

Support

• Email: [email protected]
• Contact page: https://www.mailzzy.com/contact-us/
• Documentation issues with this repository: open a GitHub issue.

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Mailzzy is a product of SoftSages.