A fairly complete, cross-platform multi-account email MCP server with a guided setup UI, though the source material does not enumerate specific tool names, and local credential storage plus email-sending capability warrant careful risk review.
mcp-email-server is an open-source Model Context Protocol server that lets MCP clients read, search, organize, and send email over IMAP and SMTP, with support for multiple accounts across Windows, macOS, and Linux. It ships a configuration UI (mcp-email-server ui) for setting up email accounts and can be run over stdio via uv/uvx for MCP client integration. Version 1.0.0 introduces 'Local Email App V2', which stores credentials in a managed SQLite database and offers a preview-first CLI migration path from legacy TOML/keyring configuration; unmigrated legacy settings continue to work in a backward-compatible mode without forced migration.
1) From a source checkout, run uv sync then uv run mcp-email-server ui (or uvx mcp-email-server@latest ui for a published V2 release) to open the configuration UI and add an email account with its address and password — common connection settings are auto-filled from the domain and remain editable; 2) optionally use 'Password & test' to verify the saved account; 3) add a server entry like {"mcpServers": {"mcp-email-server": {"command": "uvx", "args": ["mcp-email-server@latest", "stdio"]}}} to the MCP client configuration; 4) restart the MCP client to apply the settings; 5) ask the client to list configured accounts or recent messages to verify the connection.
{"mcpServers": {"mcp-email-server": {"command": "uvx", "args": ["mcp-email-server@latest", "stdio"]}}}