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create_test_outbound_mail — mailbox MCP Tool Mutating

create_test_outbound_mail (create test 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 create_test_outbound_mail from your client

Fastest route

claude mcp add --transport http mailbox https://mailbox.bot/api/mcp

Other tools on this server

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.