MCP Servers

Mailspring MCP Server

Enables AI agents to read email data (threads, messages, contacts, folders, labels) via the Model Context Protocol using Mailspring's DatabaseStore API.

README

Mailspring MCP Server Plugin

A Mailspring plugin that runs an MCP (Model Context Protocol) server, giving AI agents read-only access to your email data — threads, messages, contacts, folders, and labels.

The plugin uses Mailspring's own DatabaseStore API, making setup easy and seamless.

Installation

Use this if you want to install the plugin into Mailspring and run it normally.

Install dependencies and build the plugin:

npm install
npm run build

Install the built plugin into Mailspring through Mailspring's plugin install flow, or place the built plugin directory in Mailspring's packages directory.
Restart Mailspring. The MCP server starts automatically on http://127.0.0.1:2525/mcp.

MCP Configuration

Import the configuration using the following JSON snippet, example vscode snippet included in repo:

{
  "mcpServers": {
    "mailspring": {
      "url": "http://127.0.0.1:2525/mcp"
    }
  }
}

Development

Use this if you are actively working on the plugin code.

Install dependencies and build:
```
npm install
npm run build
```
Link the repo into Mailspring's packages directory so Mailspring loads your working copy:

./install.sh

Restart Mailspring.

Available Tools

Tool	Description
`search_emails`	Full-text search with structured filters (from, to, subject, date range, folder, label, unread, starred, attachments). Supports FTS5 syntax: `OR`, `NOT`, quoted phrases, prefix matching.
`read_email`	Read a specific email with full plain-text body content and attachment list
`batch_read_emails`	Read multiple emails at once by ID — full body + attachments for each
`list_threads`	List threads with filters (folder, label, unread, starred, date range, attachments). Returns enriched metadata: message count, last sender, reply status.
`read_thread`	Read a full thread with all messages, reply status, attachment details, sanitized `bodyHtml`, and stripped plain-text `body`
`list_contacts`	List or search contacts by name/email
`list_folders`	List all mailbox folders
`list_labels`	List all email labels
`get_recent_emails`	Get recent emails with date range filtering and pagination
`list_drafts`	List draft emails with pagination
`email_stats`	Get mailbox statistics

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