Radmail is a remote MCP server that gives an AI agent 6 tools, among them draft_reply, list_commitments, list_right_now. It answers at https://radmail.ai/api/mcp/sandbox over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 10 of 10 times since 4 September 2026; the last check, on 17 October 2026, succeeded.
Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
draft_reply | Draft a reply for a thread. It returns text for a human to review — it does not and cannot send it. Inputs: message_id, guidance |
list_commitments | Extract the open commitments in the correspondence, both owed by you and owed to you, with who and by-when. |
list_right_now | Return only the 'Right Now' lane — the most recent and most important messages that genuinely can't be missed. |
search | Find a specific message by sender, subject, or content. Results come back most-relevant + newest first, and every hit says where it matched (from / subject / body) and why. On this hosted sandbox it searches the built-in demo inbox; run the Inputs: query, limit |
triage_inbox | Rank a mailbox on two axes (importance x urgency) and return what needs a human now versus what can wait or is already handled — with each thread's open commitment (the promise you owe or are owed, and whether it's overdue) surfaced inline, |
why_surfaced | Explain in plain English why a given message was surfaced — the signals (sender, urgency, commitment) behind its rank. Inputs: message_id |
Every block below points at https://radmail.ai/api/mcp/sandbox. Pick your client and copy.
claude mcp add --transport http radmail https://radmail.ai/api/mcp/sandbox
{
"mcpServers": {
"radmail": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://radmail.ai/api/mcp/sandbox"]
}
}
}{
"mcpServers": {
"radmail": {
"url": "https://radmail.ai/api/mcp/sandbox"
}
}
}{
"servers": {
"radmail": {
"type": "http",
"url": "https://radmail.ai/api/mcp/sandbox"
}
}
}{
"context_servers": {
"radmail": {
"url": "https://radmail.ai/api/mcp/sandbox"
}
}
}{
"mcpServers": {
"radmail": {
"serverUrl": "https://radmail.ai/api/mcp/sandbox"
}
}
}{
"mcpServers": {
"radmail": {
"url": "https://radmail.ai/api/mcp/sandbox"
}
}
}name: Radmail
version: 0.0.1
schema: v1
mcpServers:
- name: Radmail
type: streamable-http
url: https://radmail.ai/api/mcp/sandbox{
"mcpServers": {
"radmail": {
"httpUrl": "https://radmail.ai/api/mcp/sandbox"
}
}
}{
"mcpServers": {
"radmail": {
"type": "http",
"url": "https://radmail.ai/api/mcp/sandbox"
}
}
}{
"mcpServers": {
"radmail": {
"url": "https://radmail.ai/api/mcp/sandbox"
}
}
}goose://extension?url=https%3A%2F%2Fradmail.ai%2Fapi%2Fmcp%2Fsandbox&type=streamable_http&id=radmail&name=Radmail
It answered our last check on 17 October 2026 in 184 ms. Over 10 checks since 4 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.
Yes. It is published by radmail.ai and served from radmail.ai, the vendor's own domain: https://radmail.ai/api/mcp/sandbox.
6, as returned by the server's own tools/list on 8 September 2026: draft_reply, list_commitments, list_right_now, search, triage_inbox, why_surfaced.
It answered our last check on 17 October 2026 in 184 ms. Over 10 checks since 4 September 2026 it answered 10.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://radmail.ai/api/mcp/sandbox. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: ai.radmail. Endpoint host: radmail.ai. ARD identifier: urn:air:ai.radmail:mcp:radmail-mcp.
First indexed 31 August 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.