Securenote.link vs Email Inbox API + Sending by Sendmux
Securenote.link is an MCP server published by jackalterman. Marketplaces we read that list it: 1 (Docker MCP Catalog). Email Inbox API + Sending by Sendmux is an MCP server published by Sendmux. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-16. 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 |  Securenote.link |  Email Inbox API + Sending by Sendmux |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:b3aff281c846 Forks (GitHub): 0 Pulls (Docker Hub): 37 171 Stars (Docker Hub): 2 Stars (GitHub): 1 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 2.2.0 Downloads/month (npm): 398 Downloads/week (npm): 46 Forks (GitHub): 1 Stars (GitHub): 65 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 | Securenote.link | Email Inbox API + Sending by Sendmux |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 1 (worse) | 65 (better) |
| Pulls (Docker Hub) (differs) | 37 171 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 0 (worse) | 1 (better) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (mcp/securenote-link-mcp-server) | Remote server (mcp.sendmux.ai/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares (differs) | 3 | Not published |
| Environment variables it asks for (differs) | Not published | 4, secrets among them: 3 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/jackalterman/securenote-link-mcp-server | github.com/sendmux/sendmux-sdk |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | not checked yet |
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
Securenote.link
SecureNote.link MCP Server - allowing AI agents to securely share sensitive information through end-to-end encrypted notes.
Email Inbox API + Sending by Sendmux
AI email inbox and sending tools with attachments, search, live events, and webhooks.
How to run each
Securenote.link As a local MCP server: Docker image
claude mcp add --transport stdio securenote-link-mcp-server -- docker run -i --rm mcp/securenote-link-mcp-serverEmail Inbox API + Sending by Sendmux As a remote MCP server
claude mcp add --transport http sendmux-mcp https://mcp.sendmux.ai/mcpRequires: SENDMUX_MAILBOX_API_KEY (secret), SENDMUX_MANAGEMENT_API_KEY (secret), SENDMUX_MCP_SURFACES, SENDMUX_SENDING_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of Email Inbox API + Sending by Sendmux publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of Securenote.link publish no settings it asks for, so we do not compare settings.
What it can do: Securenote.link · What it can do: Email Inbox API + Sending by Sendmux · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. 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.