Skip to main content

Email Inbox API + Sending by Sendmux

io.github.Sendmux/sendmux-mcpVersion 2.2.0

AI email inbox and sending tools with attachments, search, live events, and webhooks.

Status

Sign-in required51 msReachable. It asks for authorization, so we did not look inside.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.
Last checked
Nov 14, 2026, 14:42 UTC
Latency
51 ms
Remotes responding
1 of 1
Sign-in
OAuth sign-in
Hosting
EU hosting detected (detected, not a legal statement)
Registry data as of
Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP
https://mcp.sendmux.ai/mcpSign-in required51 ms
OAuth sign-in

Claude Code

This server asks for sign-in. Your client opens the sign-in when it connects.

claude mcp add --transport http sendmux-mcp https://mcp.sendmux.ai/mcp

Claude Desktop and claude.ai

Settings > Connectors > Add custom connector
Name: sendmux-mcp
Remote MCP server URL: https://mcp.sendmux.ai/mcp

Cursor

{
  "mcpServers": {
    "sendmux-mcp": {
      "url": "https://mcp.sendmux.ai/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"sendmux-mcp","type":"http","url":"https://mcp.sendmux.ai/mcp"}'
Streamable HTTP
npm: sendmux-mcp 1.0.0
Package only

npm (npx)

claude mcp add sendmux-mcp -- npx -y sendmux-mcp@1.0.0
Streamable HTTP
pypi: sendmux-mcp 2.2.0
Package only

PyPI (uvx)

claude mcp add sendmux-mcp -e 'SENDMUX_MCP_SURFACES=<YOUR_SENDMUX_MCP_SURFACES>' -e 'SENDMUX_MAILBOX_API_KEY=<YOUR_SENDMUX_MAILBOX_API_KEY>' -e 'SENDMUX_MANAGEMENT_API_KEY=<YOUR_SENDMUX_MANAGEMENT_API_KEY>' -- uvx sendmux-mcp==2.2.0

Replace <YOUR_SENDMUX_MCP_SURFACES>, <YOUR_SENDMUX_MAILBOX_API_KEY>, <YOUR_SENDMUX_MANAGEMENT_API_KEY> before running.

Built your own server? run.zero hosts MCP servers on European infrastructure.

Host your own MCP server on run.zero

Tools

Tools are visible after sign-in; we do not look inside protected servers.

Details

Registry status
Active
Published
Oct 2, 2026
Updated
Oct 2, 2026
Website
https://sendmux.ai/docs/guides/mcp⁠ (opens in a new tab)
Repository
https://github.com/Sendmux/sendmux-sdk⁠ (opens in a new tab)
Categories (suggested)
CommunicationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR
Not declared

Are you the operator? Claim this listing