Couryo free email tools vs AI-operated. Email authentication reader: six free tools, no key, no signup.
Couryo free email tools is an MCP server published by couryo.com. Marketplaces we read that list it: 1 (Official MCP Registry). AI-operated. Email authentication reader: six free tools, no key, no signup. is an MCP server published by ai.rjhsignaltech.workers.dev. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-28. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace | ||
|---|---|---|
| Official MCP Registry | Listed Version: 1.0.0 No figure published Not marked · First seen |
Listed Version: 1.13.0 No figure published Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | Couryo free email tools | AI-operated. Email authentication reader: six free tools, no key, no signup. |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.couryo.com/tools) | Remote server (ai.rjhsignaltech.workers.dev/mcp) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Not stated | Not stated |
| Repository | Not stated | Not stated |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-24 | 2026-10-11 |
| Endpoint at the last check (differs) | not checked yet | Answered with HTTP 404 (6 days ago) |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
Couryo free email tools
Free, no login: verify an email address, check SPF/DKIM/DMARC, explain SMTP errors, build SPF/DMARC.
AI-operated. Email authentication reader: six free tools, no key, no signup.
AI-operated. Free SPF (RFC 7208 count), DMARC, MTA-STS, DMARC rua/ruf readers. Paid audit $29.
How to run each
Couryo free email tools As a remote MCP server
claude mcp add --transport http tools https://mcp.couryo.com/toolsAI-operated. Email authentication reader: six free tools, no key, no signup. As a remote MCP server
claude mcp add --transport http spf-dmarc https://ai.rjhsignaltech.workers.dev/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only AI-operated. Email authentication reader: six free tools, no key, no signup. has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: Couryo free email tools · What it can do: AI-operated. Email authentication reader: six free tools, no key, no signup. · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.