English Français العربية

Mailercloud

Official registry Productivity

AI tools for Mailercloud email marketing: campaigns, contacts, templates, sending & analytics.

Source code Website Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http mailercloud 'https://mcp.mailercloud.com/mcp' --header 'Authorization: <OAuth 2.1 bearer token (or a Mailercloud API key sent as '\''Bearer <key>'\'').>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mailercloud": {
            "type": "http",
            "url": "https://mcp.mailercloud.com/mcp",
            "headers": {
                "Authorization": "<OAuth 2.1 bearer token (or a Mailercloud API key sent as 'Bearer <key>').>"
            }
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Mailercloud plugin for Claude Code
  2. What's inside
  3. Install
  4. Install in Gemini CLI
  5. Install in Cline and other MCP clients
  6. Requirements & authentication
  7. Verify it installed
  8. Local development
  9. Structure

Mailercloud plugin for Claude Code

Bundles the Mailercloud MCP server together with ready-made commands, a best-practices skill, and a campaign-manager subagent — so Claude Code users get expert Mailercloud workflows out of the box, not just the raw tools.

This is a Claude Code plugin. For claude.ai / Desktop / Mobile, use the Mailercloud connector in the Claude directory instead — same server, broader reach.

What's inside

PieceWhat it adds
.mcp.jsonConnects the Mailercloud MCP server (https://mcp.mailercloud.com/mcp, 50+ tools, 4 guided prompts)
/mailercloud:campaign-auditAudit a draft campaign before sending
/mailercloud:analyze-campaignsAnalyze recent campaigns + action plan
/mailercloud:clean-listClean a list safely: preview suppressions, segment non-openers, offer verification
mailercloud-best-practices skillTool map, term-to-action glossary, pre-send checklist, deliverability & metric guidance
campaign-manager agentA specialist persona for multi-step campaign work

No changes to the Mailercloud server are required — the plugin only references it.

Install

Run these in Claude Code one at a time (each is a separate slash command — enter the first, wait for it to finish, then enter the second). Do not paste both lines together.

1. Add the marketplace:

/plugin marketplace add https://github.com/mailercloud-com/mailercloud-plugin.git

2. Install the plugin:

/plugin install mailercloud@mailercloud

Use the full https://….git URL above. The GitHub shorthand (mailercloud-com/mailercloud-plugin) makes Claude Code clone over SSH, which fails if you don't have GitHub SSH keys configured. The HTTPS URL works for everyone.

Then restart Claude Code if prompted, and try /mailercloud:campaign-audit.

Install in Gemini CLI

gemini extensions install https://github.com/mailercloud-com/mailercloud-plugin

Then run /mcp in Gemini CLI. mailercloud should be listed, and Gemini will ask you to sign in to Mailercloud the first time a tool runs.

Install in Cline and other MCP clients

Mailercloud is a hosted MCP server at https://mcp.mailercloud.com/mcp (Streamable HTTP, OAuth sign-in). Step-by-step setup for Cline and other agents is in llms-install.md.

Requirements & authentication

  • A Mailercloud account (sign up at https://mailercloud.com).
  • The first time a Mailercloud tool runs, Claude Code connects the MCP server and prompts you to authorize — sign in to Mailercloud (OAuth) or provide a Mailercloud API key. Until you authorize, the tools will report that authentication is required; this is expected.

Verify it installed

/plugin list                     # should show: mailercloud@mailercloud

You should also see /mailercloud:campaign-audit and /mailercloud:analyze-campaigns in the slash-command list, and the mailercloud MCP server under your connected tools.

Local development

To test changes without publishing, add the folder as a local marketplace:

/plugin marketplace add ./mailercloud-plugin
/plugin install mailercloud@mailercloud

Structure

mailercloud-plugin/
  .claude-plugin/
    plugin.json          # plugin manifest
    marketplace.json     # makes this repo installable as a marketplace
  .mcp.json              # references the remote Mailercloud MCP server
  commands/              # /mailercloud:* slash commands
  skills/                # mailercloud-best-practices
  agents/                # campaign-manager

Frequently asked questions

What is Mailercloud?

AI tools for Mailercloud email marketing: campaigns, contacts, templates, sending & analytics.

How do I install Mailercloud?

It runs as a remote server. In Claude Code: claude mcp add --transport http mailercloud 'https://mcp.mailercloud.com/mcp' --header 'Authorization: <OAuth 2.1 bearer token (or a Mailercloud API key sent as '\''Bearer <key>'\'').>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Mailercloud need an API key?

Yes. It expects Authorization, which you set in its configuration.

Is Mailercloud open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Mailercloud?

It is published by mailercloud-com. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.