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Sidemail MCP Server

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by sidemail
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JavaScript
Remote
MIT License
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1

Sidemail Model Context Protocol (MCP) Server

Sidemail MCP Server provides Model Context Protocol (MCP) integration for Sidemail.io, enabling programmatic access to Sidemail's transactional email, contacts, domains, and Messenger features via MCP agent mode in VS Code and other MCP clients.

Features

  • Manage sending domains

  • Test sending transactional emails

  • Manage contacts and groups

  • Create, update, and delete Messenger drafts

  • Query sent emails and contacts

Related MCP server: protonmail-mcp

Prerequisites

  • Node.js v18 or newer

  • Sidemail API Key

Microsoft VS Code setup (assisted)

  1. Open the Command Palette (Ctrl/Cmd + Shift + P).

  2. Type “MCP: Add Server…” and select it.

  3. Select "NPM Package".

  4. Enter @sidemail/mcp and confirm it.

  5. Confirm the installation.

  6. Enter your Sidemail API key and confirm it.

Microsoft VS Code setup (manual)

Alternatively, you can install it manually by modifying the mcp.json configuration file.

  1. Open the Command Palette (Ctrl/Cmd + Shift + P).

  2. Type “MCP: Open User Configuration” and select it.

  3. Add the configuration below and save changes.

{ "servers": { "sidemail-mcp": { "type": "stdio", "command": "npx", "args": ["-y", "@sidemail/mcp"], "env": { "SIDEMAIL_API_KEY": "${input:sidemail-key}", }, }, }, "inputs": [ { "type": "promptString", "id": "sidemail-key", "description": "Sidemail API Key", "password": true, }, ], }

Claude Desktop setup

Edit (or create) the config file:

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

  • Windows: %APPDATA%\Claude\claude_desktop_config.json

  • Linux: ~/.config/Claude/claude_desktop_config.json

{ "mcpServers": { "sidemail": { "command": "npx", "args": ["-y", "@sidemail/mcp"], "env": { "SIDEMAIL_API_KEY": "your-key" } } } }

Cursor setup

Create or edit ~/.cursor/mcp.json:

{ "mcpServers": { "sidemail": { "command": "npx", "args": ["-y", "@sidemail/mcp"], "env": { "SIDEMAIL_API_KEY": "your-key" } } } }

CLI Usage

npx @sidemail/mcp

MCP Server Tools

Domains

  • list-domains: List all sending domains

  • create-domain: Add a new sending domain

  • delete-domain: Remove a sending domain

Messenger

  • list-messenger-drafts: List Messenger drafts

  • get-messenger-draft: Get Messenger draft by ID

  • create-messenger-draft: Create a Messenger draft

  • update-messenger-draft: Update a Messenger draft

  • delete-messenger-draft: Delete a Messenger draft

Groups

  • list-groups: List all contact groups

  • create-group: Create a new contact group

  • update-group: Update a contact group

Contacts

  • create-or-update-contact: Create or update a contact

  • query-contacts: Query contacts with filters

  • find-contact: Find a contact by email

  • delete-contact: Delete a contact

Emails

  • send-email: Send a transactional email (testing only)

  • query-emails: Query sent emails

This server cannot be installed

-
security - not tested
A
license - permissive license
-
quality - not tested

How are these scores calculated?

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