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MailProbe

by mailprobe.dev · remote · local (npm) · no sign-in to list tools · v1.1.1 · published by dev.mailprobe

Verify email addresses in real time: deliverability, disposable and role addresses, typo fixes.

Changes · 1
CompareRegistry entry

2 tools: 1 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http mailprobe https://mailprobe.dev/mcp --header 'Authorization: <your-authorization>'

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 1Claude Code: ask
  • verify_emailsChecks whether email addresses exist and can receive mail, in real time and without sending anything.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Checks whether email addresses exist and can receive mail, in real time and without sending anything. Returns one result per address, in input order. Act on `status`: `valid` is safe to send, `invalid` must not be used, `risky` is accepted but uncertain (catch-all domain, role or disposable address, provider that blocks probing) and `unknown` could not be determined. `score` is a 0-100 confidence value, `reason` explains a verdict that is not plainly deliverable and `did_you_mean` suggests a fix for a likely typo. One credit per address actually probed: duplicates and malformed addresses are free. At most 20 addresses per call: split a longer list into several calls.

    Annotations the server declares

    • title: Verify Email Addresses
    • readOnlyHint: true
    • openWorldHint: true
Only reads 1Claude Code: allow
  • get_creditsReturns the number of verification credits left on the MailProbe account that owns the API key.No findings

    Why it is in this group

    • The name "get_credits" says "get": a word for reading.
    Description, as the server wrote it
    Returns the number of verification credits left on the MailProbe account that owns the API key. Reading the balance uses no credit.

    Annotations the server declares

    • title: Get Credit Balance
    • readOnlyHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http mailprobe https://mailprobe.dev/mcp --header 'Authorization: <your-authorization>'

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__mailprobe__get_credits"
    ],
    "ask": [
      "mcp__mailprobe__verify_emails"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as mailprobe. Review it before you use it.