PO6 Mailbox vs Forward Email
PO6 Mailbox is an MCP server published by po6.com. Marketplaces we read that list it: 1 (Official MCP Registry). Forward Email is an MCP server published by forwardemail.net. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-06. 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 |  PO6 Mailbox |  Forward Email |
|---|---|---|
| Official MCP Registry | Listed Version: 1.0.0 No figure published Not marked · First seen |
Listed Version: 1.0.7 Downloads/month (npm): 506 Downloads/week (npm): 60 Forks (GitHub): 5 Stars (GitHub): 2 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 | PO6 Mailbox | Forward Email |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | No figure on GitHub | 2 |
| Forks (GitHub) (differs) | No figure on GitHub | 5 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.po6.com) | On your machine (@forwardemail/mcp-server) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 3, secrets among them: 2 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/po6-com/po6_mail | github.com/forwardemail/mcp-server |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 23 h ago, requires authentication | no remote endpoint we check |
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
PO6 Mailbox
Give AI agents secure access to your email via private aliases with dedicated mailbox storage.
Forward Email
Privacy-focused email: domains, DNS verification, aliases, SMTP sending, mailboxes and calendars.
How to run each
PO6 Mailbox As a remote MCP server
claude mcp add --transport http mailbox https://mcp.po6.comForward Email As a local MCP server: npm package
claude mcp add --env "FORWARD_EMAIL_ALIAS_PASSWORD=<YOUR_FORWARD_EMAIL_ALIAS_PASSWORD>" --env "FORWARD_EMAIL_API_KEY=<YOUR_FORWARD_EMAIL_API_KEY>" --transport stdio forward-email -- npx -y @forwardemail/mcp-serverRequires: FORWARD_EMAIL_ALIAS_PASSWORD (secret), FORWARD_EMAIL_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only PO6 Mailbox 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
The marketplaces of PO6 Mailbox publish no settings it asks for, so we do not compare settings.
What it can do: PO6 Mailbox · What it can do: Forward Email · 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.