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

Email Spam Tester belongs to the Communication category with cloud HTTP/SSE execution, while MailX Email Deliverability belongs to the Communication category with local stdio execution.

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

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

Which MCP server has more tools and community activity?

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

Can I use both Email Spam Tester and MailX Email Deliverability 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 Spam Tester vs MailX Email Deliverability

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

Communication · Remote HTTP/SSE

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

MailX Email Deliverability

Communication · Local stdio

Quality: 37/100 (Fair) | Auth: No auth required

Verdict Summary: Choose Email Spam Tester if you need specialized Communication tools running via a hosted cloud SSE transport. Choose MailX Email Deliverability 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 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

Choose MailX Email Deliverability 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).

Explore MailX Email Deliverability Details

Feature & Specification Comparison

Specification	Email Spam Tester VerifiedCommunication	M MailX Email Deliverability Communication
Summary	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.	Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.
Category & Scope

Tools & Capabilities Breakdown

Email Spam Tester Tools (0)

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

MailX Email Deliverability 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 Spam Tester Configuration

mcpServers (Claude Desktop / Cursor)

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

MailX Email Deliverability Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "mailx-email-deliverability": {
      "command": "npx",
      "args": [
        "-y",
        "mailx-email-deliverability"
      ]
    }
  }
}

Frequently Asked Questions

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

More alternatives to Email Spam Tester More alternatives to MailX Email Deliverability Communication category hub