What is the key difference between MailProbe and Mail7 Email Validation?

MailProbe belongs to the Communication category with local stdio execution, while Mail7 Email Validation belongs to the Communication category with local stdio execution.

How do I install MailProbe or Mail7 Email Validation in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are MailProbe and Mail7 Email Validation free or paid?

MailProbe operates under a Free / Open Source model (No auth required). Mail7 Email Validation operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

MailProbe lists 2 tools with 0 views and 0 GitHub stars. Mail7 Email Validation lists 4 tools with 2 views and 0 GitHub stars.

Can I use both MailProbe and Mail7 Email Validation together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

Side-by-Side Model Context Protocol Comparison

MailProbe vs Mail7 Email Validation

In-depth architectural comparison of the MailProbe and Mail7 Email Validation MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

MailProbe

Communication · Local stdio

Quality: 51/100 (Good) | Auth: No auth required

Mail7 Email Validation

Communication · Local stdio

Quality: 56/100 (Good) | Auth: No auth required

Verdict Summary: Choose MailProbe if you need specialized Communication tools running via a local process. Choose Mail7 Email Validation if your workspace requires Communication integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose MailProbe when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
You have access to required keys: MAILPROBE_API_KEY.
Primary tools included: verify_emails, get_credits.

Explore MailProbe Details

Choose Mail7 Email Validation when:

You need dedicated capabilities in the Communication domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
You have access to required keys: MAIL7_API_KEY, MAIL7_BASE_URL.
Primary tools included: validate_email, validate_emails, check_domain.

Feature & Specification Comparison

Specification	M MailProbe Communication	Mail7 Email Validation Communication
Summary	Verify email addresses in real time: deliverability, disposable and role addresses, typo fixes.	Verify email addresses, clean lists, and audit a domain SPF, DKIM, DMARC and MX setup.
Category & Scope	Communication	Communication
Quality signal

Tools & Capabilities Breakdown

MailProbe Tools (2)

verify_emails

Verifies 1 to 20 addresses and returns one result per address, in the order given: `status` (`valid`, `invalid`, `risky` or `unknown`), a `score` from 0 to 100, the `reason` of a verdict that is not plainly deliverable, the `disposable`, `role_based`, `free_provider` and `catch_all` flags, and `did…

get_credits

Returns the credits left on the account of the API key

Mail7 Email Validation Tools (4)

validate_email

Check whether a single email address is deliverable: syntax, domain MX records, disposable-domain database and a live SMTP mailbox probe. Status is one of "Valid", "Not Valid", "Unknown". Unknown means the mailbox could NOT be checked (catch-all domain, greylisting, blocked SMTP port) - it is NOT a bad address. Never delete, reject or report Unknown addresses as invalid; present them separately and let the user decide. Use validate_emails instead when you have more than one address.

validate_emails

Check up to 50 email addresses in one call and get a per-address verdict plus a summary. Status is one of "Valid", "Not Valid", "Unknown". Unknown means the mailbox could NOT be checked (catch-all domain, greylisting, blocked SMTP port) - it is NOT a bad address. Never delete, reject or report Unknown addresses as invalid; present them separately and let the user decide. Requires MAIL7_API_KEY (anonymous callers get a 25-address free sample only). Each address takes a few seconds of real SMTP work, so this call is slow by nature: for a longer list, split it and call this tool repeatedly with the next 50 addresses. Never run two calls in parallel - the API serialises one bulk job per client and the second call fails.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

MailProbe Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "mailprobe": {
      "command": "npx",
      "args": [
        "-y",
        "mailprobe-mcp"
      ],
      "env": {
        "MAILPROBE_API_KEY": "YOUR_MAILPROBE_API_KEY_HERE"
      }
    }
  }
}

Mail7 Email Validation Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "mail7-email-validation": {
      "command": "npx",
      "args": [
        "-y",
        "mail7-mcp"
      ],
      "env": {
        "MAIL7_API_KEY": "YOUR_MAIL7_API_KEY_HERE",
        "MAIL7_BASE_URL": "YOUR_MAIL7_BASE_URL_HERE"
      }
    }
  }
}

Frequently Asked Questions

MailProbe is categorized under Communication and uses a local stdio subprocess. In contrast, Mail7 Email Validation belongs to Communication using local stdio subprocess. Select MailProbe when you need capabilities focused on communication and Mail7 Email Validation when you require tools for communication.

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