# mcp-server Gives an AI agent a mailbox with configurable human approval for outgoing mail. Use it to automate email tasks while keeping control over who the agent can contact. - MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, Gemini CLI · ★ 2 - Author: multimail-dev - License: MIT · policy=link-only · description only; the file stays with the author - Source: https://github.com/multimail-dev/mcp-server - Updated: 2026-06-12 - HTML: https://affpapa.org/en/nevibecode/mcp/multimail-dev-mcp-server ## What it does Built by multimail-dev, mcp-server connects an AI agent to email through tools for reading messages, composing replies, handling attachments, and scheduling delivery. Messages can be authored in Markdown, while replies retain their conversation threading. Outgoing mail includes a cryptographically signed identity header containing information about the operator and the mailbox's oversight mode. Mailbox permissions range from read-only access to unrestricted sending and receiving. In `gated_send` mode, outgoing messages wait for human approval unless their recipients match an approved address or domain pattern. Incoming and outgoing messages pass through content scanning that flags phishing, malware, and prompt injection patterns. Connect through the remote HTTP endpoint, which uses OAuth during the initial connection, or run the server locally with `npx -y @multimail/mcp-server`. Local configuration uses `MULTIMAIL_API_KEY` and `MULTIMAIL_MAILBOX_ID`. The default `gated_send` mode keeps newly addressed outgoing mail behind an approval step, which matters when configuring unattended email workflows. ## Requirements - Needs: Node.js (commands run via npx) - Remote server: `https://mcp.multimail.dev/mcp` - Environment variables: `MULTIMAIL_API_KEY`, `MULTIMAIL_MAILBOX_ID` — keys and tokens: ask the human for the values, never commit them or put them in shared files. ## Install ### Claude Code (native platform) 1. **Platform CLI: remote server** ```bash claude mcp add --transport http mcp-server https://mcp.multimail.dev/mcp ``` 2. **Platform CLI** ```bash claude mcp add --env MULTIMAIL_API_KEY= --env MULTIMAIL_MAILBOX_ID= --transport stdio multimail-dev-mcp-server -- npx -y @multimail/mcp-server ``` Replace <…> with your own values ### Codex 1. **Platform CLI: remote server** ```bash codex mcp add multimail-dev-mcp-server --url https://mcp.multimail.dev/mcp ``` 2. **Platform CLI** ```bash codex mcp add multimail-dev-mcp-server --env MULTIMAIL_API_KEY= --env MULTIMAIL_MAILBOX_ID= -- npx -y @multimail/mcp-server ``` Replace <…> with your own values ### Cursor **Config file** File `.cursor/mcp.json`: ```json { "mcpServers": { "multimail-dev-mcp-server": { "url": "https://mcp.multimail.dev/mcp" } } } ``` File `.cursor/mcp.json`: ```json { "mcpServers": { "multimail-dev-mcp-server": { "command": "npx", "args": [ "-y", "@multimail/mcp-server" ], "env": { "MULTIMAIL_API_KEY": "", "MULTIMAIL_MAILBOX_ID": "" } } } } ``` Replace <…> with your own values ### GitHub Copilot **Config file** File `.vscode/mcp.json`: ```json { "servers": { "multimail-dev-mcp-server": { "type": "http", "url": "https://mcp.multimail.dev/mcp" } } } ``` File `.vscode/mcp.json`: ```json { "servers": { "multimail-dev-mcp-server": { "type": "stdio", "command": "npx", "args": [ "-y", "@multimail/mcp-server" ], "env": { "MULTIMAIL_API_KEY": "", "MULTIMAIL_MAILBOX_ID": "" } } } } ``` Replace <…> with your own values ### Gemini CLI 1. **Platform CLI: remote server** ```bash gemini mcp add -t http multimail-dev-mcp-server https://mcp.multimail.dev/mcp ``` 2. **Platform CLI** ```bash gemini mcp add -e MULTIMAIL_API_KEY= -e MULTIMAIL_MAILBOX_ID= multimail-dev-mcp-server npx -y @multimail/mcp-server ``` Replace <…> with your own values ## When to use it - Filter incoming mail by sender, subject, or message status - Reply within existing email conversations - Require operator approval before sending new messages - Allow automatic delivery to approved addresses or domains - Inspect signed agent identity and privacy-preserving reputation details ## Example prompts - Review my inbox and list messages from the specified sender. - Draft a reply to this email and wait for my approval before sending it. - Schedule this message for the requested time and check its delivery status. ## Similar - [agentmail-mcp](https://affpapa.org/en/nevibecode/skills/agentmail-mcp.md) — skill · 1200 installs - [inboxy](https://affpapa.org/en/nevibecode/mcp/inboxy.md) — MCP server - [agent-mail](https://affpapa.org/en/nevibecode/mcp/agent-mail.md) — MCP server - [codex-oauth-automation-extension](https://affpapa.org/en/nevibecode/skills/codex-oauth-automation-extension.md) — skill · 505 installs - [sharp-edges](https://affpapa.org/en/nevibecode/skills/sharp-edges.md) — skill · 6900 installs - [data-encryption](https://affpapa.org/en/nevibecode/skills/data-encryption.md) — skill · 611 installs ## Other versions with the same name - [mcp-server · heyputer](https://affpapa.org/en/nevibecode/mcp/mcp-server.md) — ★ 43929 - [mcp-server · mapbox](https://affpapa.org/en/nevibecode/mcp/mapbox-mcp-server.md) — ★ 363 - [mcp-server · packmindhub](https://affpapa.org/en/nevibecode/mcp/packmindhub-mcp-server.md) — ★ 319 - [mcp-server · bingowon](https://affpapa.org/en/nevibecode/mcp/bingowon-mcp-server.md) — ★ 121 - [mcp-server · ui5](https://affpapa.org/en/nevibecode/mcp/ui5-mcp-server.md) — ★ 105 --- NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md