zoho-mail-health-check vs MailboxValidator
zoho-mail-health-check is a plugin bundle for AI coding tools published by MSApps-Mobile. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). MailboxValidator is an MCP server published by MailboxValidator. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-23. 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 |  zoho-mail-health-check |  MailboxValidator |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.1.0 Forks (GitHub): 2 Stars (GitHub): 9 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.0 Downloads/month (npm): 107 Downloads/week (npm): 11 Forks (GitHub): 0 Stars (GitHub): 1 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 | zoho-mail-health-check | MailboxValidator |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 9 (better) | 1 (worse) |
| Forks (GitHub) (differs) | 2 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (mcp-mailboxvalidator) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 3, secrets among them: 1 | 1, secrets among them: 1 |
| Parts of the bundle (differs) | 2 | Not a bundle |
| Licence | Not stated | Not stated |
| Repository (differs) | github.com/msapps-mobile/claude-plugins | github.com/mailboxvalidator/mcp-mailboxvalidator |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-12 | 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
zoho-mail-health-check
Daily health check plugin for Zoho Mail accounts. Verifies that mail accounts are reachable, reads recent inbox messages, sends test emails, and saves a structured pass/fail report to the workspace. Designed for automated daily monitoring of business email accounts.
MailboxValidator
Email validation MCP server using the MailboxValidator API. It can validate email addresses.
How to run each
zoho-mail-health-check As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install zoho-mail-health-check@claude-communityMailboxValidator As a local MCP server: npm package
claude mcp add --env "MAILBOXVALIDATOR_API_KEY=<YOUR_MAILBOXVALIDATOR_API_KEY>" --transport stdio mcp-mailboxvalidator -- npx -y mcp-mailboxvalidatorRequires: MAILBOXVALIDATOR_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Only zoho-mail-health-check asks for
ZOHO_ACCOUNTSZOHO_CLIENT_IDZOHO_CLIENT_SECRET (secret)
Only MailboxValidator asks for
MAILBOXVALIDATOR_API_KEY (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: zoho-mail-health-check · What it can do: MailboxValidator · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. 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.