mail-collab vs DMARC Shark — Email DNS Checker
mail-collab is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑21.
mail-collab is a plugin bundle for AI coding tools published by Christopher Huffman. No marketplace we read lists it any more. DMARC Shark — Email DNS Checker is an MCP server published by dmarcshark.com. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-07. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace | ||
|---|---|---|
| Community marketplace chrishuffman5/domain-expert | Removed on 2026-10-21 Version: 1.0.0 Forks (GitHub): 3 Stars (GitHub): 6 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.0 No figure published 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 | mail-collabno longer listed · | DMARC Shark — Email DNS Checker |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 1 |
| Stars (GitHub) (differs) | 6 | No figure on GitHub |
| Forks (GitHub) (differs) | 3 | No figure on GitHub |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (dmarcshark.com/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 6 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/chrishuffman5/domain-expert | github.com/skatkov/dmarcshark |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-15 | 2026-10-19 |
| Endpoint at the last check (differs) | no remote endpoint we check | Status out of date: no HTTP response at the last check 40 h ago |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of mail-collab
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
-
Email hosting from your AI: read and send mail, add domains, check DNS and manage mailboxes.
-
Email infrastructure and authentication for developers: domains, inbox routes, auth apps, deploys.
-
Read, reply to and send email across every domain you connect to Mailyond, via API key over HTTP.
-
Hosted MCP server for your Gmail, Outlook and IMAP mail, with mailboxes and scopes set per agent.
-
Business email on your own domain that your AI agent can read, search and draft in.
-
Send and read email through connected mailboxes. Warm them up, check addresses and run campaigns.
What each says it does
mail-collab
Email and collaboration — Exchange, Microsoft 365, Google Workspace, Postfix — mail flow, SPF/DKIM/DMARC, hybrid, migrations — with a mail-collab-specialist agent.
DMARC Shark — Email DNS Checker
Check a domain's public SPF, DMARC, MX and DKIM DNS records on demand. No account required.
How to run each
mail-collab
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
DMARC Shark — Email DNS Checker As a remote MCP server
claude mcp add --transport http email-dns-checker https://dmarcshark.com/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only DMARC Shark — Email DNS Checker 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
Neither one's marketplaces publish the settings it asks for.
What it can do: mail-collab · What it can do: DMARC Shark — Email DNS Checker · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. 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.