MailFixture is a Model Context Protocol (MCP) server: Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links. As an MCP server it plugs straight into AI assistants, exposing its functionality as tools the model can invoke on your behalf.
It's a hosted (remote) server — point your client at https://mailfixture.com/mcp and you're connected, with nothing to install locally. The current release is v0.1.0.
You'll find MailFixture in the Communication category here on mcp.site; it connects to Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and any other MCP client — see the install snippets below. If you maintain MailFixture for mailfixture.com, claim this listing to verify ownership, earn the Verified badge, and keep the details current.