MailFerret

com.appin60.mailferretPublished by mailferret.appin60.comOfficial publisherv1.0.0Updated Oct 25, 2026

Find and verify work emails with live SMTP checks and catch-all detection. Free 10 calls/day.

VerifiedStreamable HTTPWeb executableWeb Search & ScrapingBusiness & Commerce

Overview

AI-generated overview

A remote MCP server that lets an assistant find people's work emails, verify deliverability, and inspect a company's email setup.

What you can do
Find a person's verified work email from first name, last name and company domain, with live SMTP checks and catch-all detection. Check whether an email address is deliverable using MX, provider, catch-all and live SMTP RCPT checks. Inspect a company's email setup: provider, catch-all status, SaaS tools inferred from SPF, DMARC, public emails and likely address pattern.
When to use it
Useful for sales prospecting, recruiting or outreach research when you need a plausible or verified work address for a person or a quick read on a company's mail infrastructure. Also handy for cleaning a contact list before sending.
Requirements
A remote endpoint at mailferret.appin60.com over streamable HTTP; no packages, environment variables or headers are declared. The registry lists no authentication, and the description mentions a free tier of 10 calls per day.
Before you install
The service performs live SMTP checks against third-party mail servers, so queried addresses and domains are sent to the provider and to those servers. Results are probabilistic (catch-all detection, likely patterns) and may be wrong. The free tier is limited to 10 calls per day; no authentication is declared, so check the provider's terms and any paid limits before relying on it.

Installation

In SourceWeft

  1. Open MailFerret in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.appin60.mailferret%2Fmailferret/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "mailferret": {
      "type": "http",
      "url": "https://mailferret.appin60.com/mcp"
    }
  }
}

Tools

3

find_work_email

Find a person's verified work email from first name, last name and company domain (live SMTP check, catch-all detection).

Parametersdomainrequiredlast_namefirst_namerequired

verify_email

Check whether an email address is deliverable (MX, provider, catch-all, live SMTP RCPT).

Parametersemailrequired

domain_email_intel

A company's email setup: provider, catch-all, SaaS tools from SPF, DMARC, public emails, likely pattern.

Parametersdomainrequired

Version history

1
  1. v1.0.0LatestOct 13, 2026

Score

83% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • LicenseNot applicable

    A hosted service is used under its provider's terms, so no license is expected here. This check is left out of the percentage.