Agent Inbox vs MailFathom
Agent Inbox is an MCP server published by clize.ai. Marketplaces we read that list it: 1 (Official MCP Registry). MailFathom is an MCP server published by fathomise. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-22. 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 |  Agent Inbox |  MailFathom |
|---|---|---|
| Official MCP Registry | Listed Version: 0.35.5 Downloads/month (npm): 472 Downloads/week (npm): 175 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 0.7.0 Forks (GitHub): 0 Stars (GitHub): 16 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 | Agent Inbox | MailFathom |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 0 (worse) | 16 (better) |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (@clize/inbox) | Not stated |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/cooldk/clize-cli | github.com/fathomise/mailfathom |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-11 | 2026-10-12 |
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
Agent Inbox
A real email inbox for AI agents: human-approved sends, untrusted-by-default inbound.
MailFathom
Security-first, self-hosted email archive with search, cited answers, and sending for AI agents.
How to run each
Agent Inbox As a local MCP server: npm package
claude mcp add --transport stdio inbox -- npx -y --package @clize/inbox clize-mcp @clize/inbox --profile inboxMailFathom
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Commands built only from what the marketplaces declare; the full set for every client is on each card.
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: Agent Inbox · What it can do: MailFathom · 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.