Resend vs io.github.rlrghb/outlook
Resend is an MCP server published by resend. Marketplaces we read that list it: 1 (Docker MCP Catalog). io.github.rlrghb/outlook is an MCP server published by rlrghb. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-15. 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 |  Resend |  io.github.rlrghb/outlook |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:2a786579214e Forks (GitHub): 90 Pulls (Docker Hub): 21 865 Stars (Docker Hub): 5 Stars (GitHub): 576 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.16.1 Downloads/month (npm): 762 Downloads/week (npm): 60 Forks (GitHub): 8 Stars (GitHub): 21 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 | Resend | io.github.rlrghb/outlook |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 576 (better) | 21 (worse) |
| Pulls (Docker Hub) (differs) | 21 865 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 90 (better) | 8 (worse) |
| Last release (differs) | Not published | 2026-10-12 |
| Where it runs (differs) | On your machine (mcp/resend) | On your machine (olkcli) |
| Transport | stdio | stdio |
| Tools it declares (differs) | 1 | Not published |
| Environment variables it asks for (differs) | 3, secrets among them: 1 | Not published |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/resend/mcp-send-email | github.com/rlrghb/olkcli |
| Changes in the last 7 days (differs) | 0 | 1 |
| First seen | 2026-10-11 | 2026-10-11 |
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
Resend
The official MCP server to send emails and interact with Resend.
io.github.rlrghb/outlook
Outlook & OneDrive MCP: personal & enterprise tools for mail, calendar, contacts, tasks, files
How to run each
Resend As a local MCP server: Docker image
claude mcp add --env "RESEND_API_KEY=<YOUR_RESEND_API_KEY>" --transport stdio resend -- docker run -i --rm -e RESEND_API_KEY mcp/resendRequires: RESEND_API_KEY (secret)
io.github.rlrghb/outlook As a local MCP server: npm package
claude mcp add --transport stdio outlook -- npx -y olkcli mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of io.github.rlrghb/outlook publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of io.github.rlrghb/outlook publish no settings it asks for, so we do not compare settings.
What it can do: Resend · What it can do: io.github.rlrghb/outlook · 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.