# e2a — email for AI agents (MCP server) > e2a — email for AI agents is an MCP server that adds messaging tools to AI assistants such as Claude Desktop, Claude Code and Cursor. Authenticated email gateway for AI agents — per-agent inboxes, HITL approval, SPF/DKIM verified. It has 192 GitHub stars, is released under the Apache-2.0 license and runs locally with npx -y @e2a/mcp-server. Model Context Protocol server for e2a — gives any MCP-aware AI agent its own email inbox to send, receive, reply, and (optionally) review held outbound mail before it ships. ## Key facts | Fact | Value | |---|---| | Repository | https://github.com/tokencanopy/e2a | | GitHub stars | 192 | | License | Apache-2.0 | | Language | Go | | Transport | stdio, streamable-http | | Packages | npm: @e2a/mcp-server | | Remote URL | https://mcp.e2a.dev/mcp | | Needs API key | yes | | Official | no | | Works with | Claude Desktop, Claude Code, Cursor, VS Code, Claude.ai, ChatGPT | | Category | Communication | | Latest release | v1.15.2 (Sep 30, 2026) | | Last commit | Oct 6, 2026 | | MCP registry name | io.github.Mnexa-AI/mcp-server | ## Install ### Claude Desktop (claude_desktop_config.json) ```json { "mcpServers": { "e2a-email-for-ai-agents": { "command": "npx", "args": [ "-y", "@e2a/mcp-server" ], "env": { "E2A_API_KEY": "your-value" } } } } ``` Settings > Developer > Edit Config. macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\. Restart Claude Desktop afterwards. ### Claude Code ```sh claude mcp add --env E2A_API_KEY=your-value --transport stdio e2a-email-for-ai-agents -- npx -y @e2a/mcp-server ``` ### Cursor (.cursor/mcp.json) ```json { "mcpServers": { "e2a-email-for-ai-agents": { "type": "stdio", "command": "npx", "args": [ "-y", "@e2a/mcp-server" ], "env": { "E2A_API_KEY": "your-value" } } } } ``` Project file; use ~/.cursor/mcp.json to enable it in every project. ### VS Code (.vscode/mcp.json) ```json { "inputs": [ { "type": "promptString", "id": "e2a_api_key", "description": "E2A_API_KEY", "password": true } ], "servers": { "e2a-email-for-ai-agents": { "type": "stdio", "command": "npx", "args": [ "-y", "@e2a/mcp-server" ], "env": { "E2A_API_KEY": "${input:e2a_api_key}" } } } } ``` ### Claude Code (remote) ```sh claude mcp add --transport http e2a-email-for-ai-agents "https://mcp.e2a.dev/mcp" ``` The same server is also hosted as a remote MCP endpoint, so nothing runs on your machine. Config formats checked against the official docs on 2026-10-07. ## Environment variables - `E2A_API_KEY` (secret) (required): e2a API key from https://e2a.dev - `E2A_AGENT_EMAIL`: Default agent inbox (e.g. bot@your-domain.com). Optional — single-agent accounts auto-resolve. - `E2A_BASE_URL`: Self-hosted e2a backend URL. Defaults to https://e2a.dev. ## Tools - `whoami`: Get the authenticated account's identity — user, scope, plan/limits; for an agent-scoped credential, also the bound… - `list_agents`: List agent inboxes; pass deleted:true to list the 30-day trash. (Admin/account-scoped.) - `get_agent`: Get one agent inbox by its full email address. - `create_agent`: Register a new agent by its full email address — on a verified domain you own, or the deployment's shared domain. - `restore_agent`: Restore a soft-deleted agent and its configuration. (Admin/account-scoped.) - `send_message`: Send a new email. Immediate queueing returns status: accepted; future sendat returns status: scheduled plus… - `reply_to_message`: Reply to a message — one the agent received (replies to its sender) or one it sent (continues the thread to the… - `forward_message`: Forward a message into a new thread, carrying its existing attachments by default. - `list_messages`: List mail; pass deleted:true to list trash. Filter by readstatus (unread / read / all) and sender with… - `delete_message`: Move a message to the trash (restorable for ~30 days). Requires confirm: true. - `restore_message`: Restore a soft-deleted message and resume its retention clock. - `get_message`: Fetch full body, headers, and attachment metadata for one message. - `get_attachment`: Get one attachment's metadata + a short-lived downloadurl (fetch the bytes out of band); inline: true returns base64… - `update_message_labels`: Add or remove labels on a message. - `list_reviews`: List inbound and outbound messages awaiting human review across the account, soonest-expiring first. - `get_review`: Get the full held message (body, recipients, and screening context where applicable). - `approve_review`: Outbound: send a held message, optionally with reviewer edits (subject / body / recipients). - `reject_review`: Outbound: discard a held message. Inbound: drop the screening hold so it never reaches the agent. - `register_domain`: Register a custom sending domain; returns the MX + TXT DNS records to publish. (Admin/account-scoped.) - `list_api_keys`: List the account's API keys — metadata only (secrets are shown once, at creation). - `create_api_key`: Mint a new agent-scoped key bound to an inbox; returns the plaintext key ONCE — store it immediately. - `delete_api_key`: Revoke a key permanently (requires confirm: true). - `import_contacts`: Bulk-import contacts from rows, optionally enrolling them into an agent's outreach. - `delete_contact_import`: Reverse an import batch, removing untouched contacts and the enrolments it created. - `set_outreach_contact`: Enroll a contact in an agent's outreach, or update the agent-owned fields (stage, next action). - `delete_outreach_contact`: Un-enroll a contact from an agent's outreach; the contact and its suppressions survive. - `list_suppressions`: List the account-wide suppression list (address, source bounce/complaint/manual, reason, source message id). - `delete_suppression`: Un-suppress a recipient account-wide. Requires confirm: true; only use it for addresses known to be deliverable —… - `list_agent_suppressions`: List one agent's blocked recipients (unsubscribe/manual). - `create_agent_suppression`: Idempotently add a manual block for one agent; other agents can still mail the address. - `delete_agent_suppression`: Remove only the exact agent-scoped block. Requires confirm: true because the block may represent an unsubscribe. - `create_template`: Create a template from literal source — or copy a starter verbatim with fromstarter. - `validate_template`: Dry-run source: parse errors, a rendered preview against testdata, and suggestedData placeholders. ## Similar MCP servers - [Strata](https://appsgit.com/mcp-servers/strata): MCP server for progressive tool usage at any scale (see https://klavis.ai). (5,807 stars, Apache-2.0, official) - [Vexa](https://appsgit.com/mcp-servers/vexa): Meeting bot and transcripts for Google Meet, Teams and Zoom. 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