Gmail vs Email Inbox API + Sending by Sendmux
Gmail is an MCP server published by Sallytion. 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 2026-10-17. 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 |  Gmail |  Email Inbox API + Sending by Sendmux |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:9d806c6ba375 Forks (GitHub): 9 Stars (GitHub): 12 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 | Gmail | Email Inbox API + Sending by Sendmux |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 12 (worse) | 65 (better) |
| Forks (GitHub) (differs) | 9 (better) | 1 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (yashtekwani/gmail-mcp) | Remote server (mcp.sendmux.ai/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares (differs) | 3 | Not published |
| Environment variables it asks for (differs) | 6, secrets among them: 1 | 4, secrets among them: 3 |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/sallytion/gmail-mcp | 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 | Responded 3 h 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
Gmail
A Model Context Protocol server for Gmail operations using IMAP/SMTP with app password authentication. Supports listing messages, searching emails, and sending messages. To create your app password, visit your Google Account settings under Security > App Passwords. Or visit the link https://myaccount.google.com/apppasswords.
Email Inbox API + Sending by Sendmux
AI email inbox and sending tools with attachments, search, live events, and webhooks.
How to run each
Gmail As a local MCP server: Docker image
claude mcp add --env "EMAIL_PASSWORD=<YOUR_EMAIL_PASSWORD>" --transport stdio gmail-mcp -- docker run -i --rm -e EMAIL_PASSWORD yashtekwani/gmail-mcpRequires: EMAIL_PASSWORD (secret)
Email 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.
Only Email Inbox API + Sending by Sendmux has a remote endpoint we check. How we check endpoints
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
Only Gmail asks for
EMAIL_ADDRESSEMAIL_PASSWORD (secret)IMAP_HOSTIMAP_PORTSMTP_HOSTSMTP_PORT
Only Email Inbox API + Sending by Sendmux asks for
SENDMUX_MAILBOX_API_KEY (secret)SENDMUX_MANAGEMENT_API_KEY (secret)SENDMUX_MCP_SURFACESSENDMUX_SENDING_API_KEY (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Gmail · 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.