send_outbound_mail — mailbox MCP Tool Mutating
send_outbound_mail
(send outbound mail) is one of 45 tools on the
mailbox
MCP server. Connect the server and your client discovers it on the handshake.
by client
How to call send_outbound_mail from your client
- Claude Code mailbox send_outbound_mail run in your project directory
- Claude Desktop mailbox send_outbound_mail ~/Library/Application Support/Claude/claude_desktop_config.json
- Cursor mailbox send_outbound_mail ~/.cursor/mcp.json
- VS Code mailbox send_outbound_mail .vscode/mcp.json
- Zed mailbox send_outbound_mail ~/.config/zed/settings.json
- Windsurf mailbox send_outbound_mail ~/.codeium/windsurf/mcp_config.json
- Cline mailbox send_outbound_mail ~/Library/Application Support/Code/User/globalStorage/saoudrizwan.claude-dev/settings/cline_mcp_settings.json
- Gemini CLI mailbox send_outbound_mail ~/.gemini/settings.json
- Grok mailbox send_outbound_mail .mcp.json (in your project root)
- ChatGPT mailbox send_outbound_mail Settings → Connectors → Advanced → Developer mode
- Claude.ai mailbox send_outbound_mail Settings → Connectors → Add custom connector
- LangChain mailbox send_outbound_mail pip install langchain-mcp-adapters
Fastest route
claude mcp add --transport http mailbox https://mailbox.bot/api/mcpOther tools on this server
- get_mailbox
- get_usage
- list_inbound_forwarding_addresses
- list_inbound_mail
- get_inbound_mail
- list_postal_threads
- get_postal_thread
- get_mailbox_md
- propose_mailbox_md_edit
- send_facility_message
- list_facility_conversations
- get_facility_messages
- update_webhook
- list_outbound_mail
- get_outbound_mail
- cancel_outbound_mail
- create_test_outbound_mail
- advance_test_outbound_mail
- list_agent_inbox
- get_agent_inbox_context
- get_agent_inbox_sources
- list_agent_inbox_scans
- get_agent_inbox_scan
- get_agent_inbox_activity
- report_agent_inbox_outcome
- get_agent_inbox_handling
- propose_agent_inbox_handling
- seed_agent_inbox_sandbox
- list_webhook_endpoints
- create_webhook_endpoint
- update_webhook_endpoint
- test_webhook_endpoint
- test_webhook_endpoint_with_sample
- rotate_webhook_endpoint_secret
- list_webhook_deliveries
- replay_webhook_delivery
- list_inbound_items
- get_inbound_item_sources
- search_inbound_items
- get_inbound_item
- get_inbound_pages
- quote_inbound_forward
- request_inbound_action
- get_inbound_activity
This list was read from the server itself, by connecting to it and calling tools/list on 24 September 2026. It is what
the server actually exposes, not what its listing claims.
Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.