What is the key difference between FabTally Valid and Mail7 Email Validation?

FabTally Valid 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 FabTally Valid 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 FabTally Valid and Mail7 Email Validation free or paid?

FabTally Valid 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?

FabTally Valid lists 5 tools with 0 views and 0 GitHub stars. Mail7 Email Validation lists 4 tools with 0 views and 0 GitHub stars.

Can I use both FabTally Valid 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

FabTally Valid vs Mail7 Email Validation

In-depth architectural comparison of the FabTally Valid 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

FabTally Valid

Communication · Local stdio

Quality: 49/100 (Fair) | Auth: No auth required

Mail7 Email Validation

Communication · Local stdio

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

Verdict Summary: Choose FabTally Valid 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 FabTally Valid 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).
Primary tools included: validate_vat, validate_iban, validate_email.

Explore FabTally Valid 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).
Primary tools included: validate_email, validate_emails, check_domain.

Explore Mail7 Email Validation Details

Feature & Specification Comparison

Specification	F FabTally Valid Communication	M Mail7 Email Validation Communication
Summary	Validation suite: EU VAT (VIES), IBAN mod-97, email (MX+disposable), geo place lookup, VIN decode.	Verify email addresses, clean lists, and audit a domain SPF, DKIM, DMARC and MX setup.
Category & Scope	Communication	Communication
Quality signal

Tools & Capabilities Breakdown

FabTally Valid Tools (5)

validate_vat

Flagship.** EU/EEA VAT: `{country_code, vat_number}` → per-country format + checksum pre-check AND a **live VIES lookup**, returning valid/registered plus the registered company name & address when VIES has them (cached ~1h to shield the flaky VIES).

validate_iban

{iban}` → ISO 13616 length + **mod-97 checksum**, country, human-formatted grouping, and bank identifier (German Bankleitzahl, UK bank code + sort code, …) extracted from the BBAN where derivable. Pure-offline.

validate_email

{email}` → RFC-ish syntax + **live MX-record (DNS)** existence + **disposable/throwaway-domain** detection (bundled blocklist) + role-address flag (`info@`, `admin@`). Stateless & non-PII: the address is never stored and no SMTP mailbox is probed.

geo_lookup

{query:"Munich, Bavaria, Germany"}` or `{country,state,city}` → normalized names, **ISO 3166-1/-2 codes**, country→subdivision→city hierarchy, population and coordinates, over a bundled open dataset (no per-day API limits).

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).

FabTally Valid Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "fabtally-valid": {
      "command": "npx",
      "args": [
        "-y",
        "fabtally-valid-mcp"
      ]
    }
  }
}

Mail7 Email Validation Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "mail7-email-validation": {
      "command": "npx",
      "args": [
        "-y",
        "mail7-mcp"
      ]
    }
  }
}

Frequently Asked Questions

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

More alternatives to FabTally Valid More alternatives to Mail7 Email Validation Communication category hub