Email MCP Server by Sidemail

Let AI agents write & manage your SaaS emails

MCP Server – Send & manage emails, contacts and sending domains

Sidemail MCP server enables you to programmatically send and manage transactional emails, contacts, sending domains, templates, API logs, and Messenger features – right from MCP agent mode in VS Code, Claude, Cursor, and other MCP clients.

What is MCP?Model Context Protocol (MCP) is a new open standard that makes it easier for AI systems to connect with external data and services. MCP acts a bit like an API for AI models – it provides a standard “language” for AI programs to access tools or data from the outside world. Learn more in ourexplanation article.

{ "servers": { "sidemail": { "type": "http", "url": "https://api.sidemail.io/mcp", "headers": { "Authorization": "Bearer ${input:sidemail-key}" } } }, "inputs": [ { "type": "promptString", "id": "sidemail-key", "description": "Sidemail API Key", "password": true } ] }

Use the local NPM package when your client expects a stdio MCP server.
- Open the Command Palette (Ctrl/Cmd + Shift + P).
- Type“MCP: Add Server…”and select it.
- Select"NPM Package".
- Enter@sidemail/mcpand confirm it.
- Confirm the installation.
- Enter your Sidemail API key and confirm it.

Alternatively, you can install it manually by modifying themcp.jsonconfiguration file.
- Open the Command Palette (Ctrl/Cmd + Shift + P).
- Type“MCP: Open User Configuration”and select it.
- 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 } ] }

- 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" } } } }

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

- list-domains: List all sending domains
- create-domain: Add a new sending domain
- check-domain: Check domain verification and DNS status
- setup-domain-mail-from: Set up custom Mail-From DNS records
- delete-domain: Remove a sending domain

- 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

Example – Writing a product update email:

- list-groups: List all contact groups
- create-group: Create a new contact group
- update-group: Update a contact group
- delete-group: Delete a contact group

- 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

- send-email: Send a transactional email (testing only)
- query-emails: Query sent emails
- get-email: Retrieve an email by ID
- delete-email: Delete a scheduled email

- list-templates: List email templates
- get-template: Retrieve a template by ID

- query-api-request-logs: Query recent API request logs

- Github repository:sidemail/sidemail-mcp-server
- NPM package:@sidemail/mcp
- Features overview

Send transactional email, run campaigns and automations, manage contacts and audit deliverability — 54 annotated tools.