What is the key difference between Email Deliverability Audit API and Email Spam Tester?

Email Deliverability Audit API belongs to the Communication category with cloud HTTP/SSE execution, while Email Spam Tester belongs to the Communication category with cloud HTTP/SSE execution.

How do I install Email Deliverability Audit API or Email Spam Tester 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 Email Deliverability Audit API and Email Spam Tester free or paid?

Email Deliverability Audit API operates under a Free / Open Source model (No auth required). Email Spam Tester operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Email Deliverability Audit API lists 2 tools with 0 views and 0 GitHub stars. Email Spam Tester lists 0 tools with 2 views and 0 GitHub stars.

Can I use both Email Deliverability Audit API and Email Spam Tester 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

Email Deliverability Audit API vs Email Spam Tester

In-depth architectural comparison of the Email Deliverability Audit API and Email Spam Tester 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

Email Deliverability Audit API

Communication · Remote HTTP/SSE

Quality: 48/100 (Fair) | Auth: No auth required

Email Spam Tester

Communication · Remote HTTP/SSE

Quality: 72/100 (Great) | Auth: No auth required

Verdict Summary: Choose Email Deliverability Audit API if you need specialized Communication tools running via a hosted cloud SSE transport. Choose Email Spam Tester if your workspace requires Communication integration with remote web transport. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Email Deliverability Audit API when:

You need dedicated capabilities in the Communication domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: email_audit_deliverability, domain.

Explore Email Deliverability Audit API Details

Choose Email Spam Tester when:

You need dedicated capabilities in the Communication domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Email Spam Tester Details

Feature & Specification Comparison

Specification	Email Deliverability Audit API Communication	Email Spam Tester VerifiedCommunication
Summary	Audit email domain deliverability: SPF, DKIM, DMARC, MX. Score 0-100. x402.	Email deliverability testing for agents. Four tools: get a disposable test address, wait for the report once the message arrives, read it, and fetch the raw source. The report has 42 checks (SPF, DKIM, DMARC, 21 blocklists, two spam engines, Gmail and Yahoo bulk sender rules), each linked to its RFC, plus a fix plan. Remote endpoint, no API key.
Category & Scope

Tools & Capabilities Breakdown

Email Deliverability Audit API Tools (2)

email_audit_deliverability

Audit email deliverability for a domain — checks SPF, DKIM, DMARC, MX records

domain

Domain to audit (e.g. example.com, gmail.com)

Email Spam Tester Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

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).

Email Deliverability Audit API Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "email-deliverability-audit-api": {
      "url": "https://email-deliverability.api.klymax402.com/mcp"
    }
  }
}

Email Spam Tester Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "email-spam-tester": {
      "url": "https://email-spam-tester.com/mcp"
    }
  }
}

Frequently Asked Questions

Email Deliverability Audit API is categorized under Communication and uses a remote streaming HTTP/SSE transport. In contrast, Email Spam Tester belongs to Communication using remote streaming HTTP/SSE transport. Select Email Deliverability Audit API when you need capabilities focused on communication and Email Spam Tester when you require tools for communication.

More alternatives to Email Deliverability Audit API More alternatives to Email Spam Tester Communication category hub