MailProbe vs Email Verifier (SMTP, MX, Catch-All)
MailProbe is an MCP server published by mailprobe.dev. Marketplaces we read that list it: 2 (Official MCP Registry, npm registry (MCP servers)). Email Verifier (SMTP, MX, Catch-All) is an MCP server published by sumitrmardy. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-25. 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 |  MailProbe |  Email Verifier (SMTP, MX, Catch-All) |
|---|---|---|
| Official MCP Registry | Listed Version: 1.1.1 Downloads/month (npm): 707 Downloads/week (npm): 668 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Listed Version: 1.0.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
| npm registry (MCP servers) | Listed Version: 1.1.1 Downloads/month (npm): 707 Downloads/week (npm): 668 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
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 | MailProbe | Email Verifier (SMTP, MX, Catch-All) |
|---|---|---|
| Marketplaces that list it (differs) | 2 (better) | 1 (worse) |
| Stars (GitHub) | 0 | 0 |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server or your machine | Remote server (mcp.apify.com) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | Not published |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/jamalofski/mailprobe-mcp | github.com/sumitrmardy/email-verifier-api |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-21 |
| Endpoint at the last check (differs) | Responded 5 days ago | Not responding since 2026-10-24 |
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
MailProbe
Verify email addresses in real time: deliverability, disposable and role addresses, typo fixes.
Email Verifier (SMTP, MX, Catch-All)
Bulk email verification: live SMTP mailbox check, MX, catch-all, disposable and role detection.
How to run each
MailProbe As a remote MCP server
claude mcp add --transport http mailprobe https://mailprobe.dev/mcp --header "Authorization: Bearer <YOUR_API_KEY>"Requires: MAILPROBE_API_KEY (secret), Authorization header
Email Verifier (SMTP, MX, Catch-All)
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Requires: Authorization header
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only the endpoint of MailProbe responded at the last daily 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
The marketplaces of Email Verifier (SMTP, MX, Catch-All) publish no settings it asks for, so we do not compare settings.
What it can do: MailProbe · What it can do: Email Verifier (SMTP, MX, Catch-All) · Compare two other plugins
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the public npm registry (registry.npmjs.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.