What is the key difference between Telephony MCP Server and Email Spam Tester?

Telephony MCP Server 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 Telephony MCP Server 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 Telephony MCP Server and Email Spam Tester free or paid?

Telephony MCP Server 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?

Telephony MCP Server lists 6 tools with 1 views and 14 GitHub stars. Email Spam Tester lists 4 tools with 6 views and 2 GitHub stars.

Can I use both Telephony MCP Server 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

Telephony MCP Server vs Email Spam Tester

In-depth architectural comparison of the Telephony MCP Server 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

Telephony MCP Server

Communication · Remote HTTP/SSE

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

Email Spam Tester

Communication · Remote HTTP/SSE

Quality: 82/100 (Excellent) | Auth: No auth required

Verdict Summary: Choose Telephony MCP Server 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 Telephony MCP Server 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).
You have access to required keys: VONAGE_API_KEY, VONAGE_API_SECRET, VONAGE_APPLICATION_ID, VONAGE_PRIVATE_KEY_PATH, VONAGE_LVN, VONAGE_API_URL, VONAGE_SMS_URL, CALLBACK_SERVER_URL.
Primary tools included: Vonage voice-call automation, SMS sending and receiving, Speech recognition and call summaries.

Explore Telephony MCP Server 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).

Feature & Specification Comparison

Specification	Telephony MCP Server khan2a Communication	Email Spam Tester VerifiedCommunication
Summary	MCP Telephony server for automating voice calls with Speech-to-Text and Speech Recognition to summarize call conversations. Send and receive SMS, detect voicemail, and integrate with Vonage APIs for advanced telephony workflows.	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.

Tools & Capabilities Breakdown

Telephony MCP Server Tools (6)

Vonage voice-call automation

SMS sending and receiving

Speech recognition and call summaries

Voicemail detection

Vonage callback event storage

Docker and Python execution

Email Spam Tester Tools (4)

get_test_address

Reserve a single-use address to send a draft email to, for a full check. Returns the address and the URL its report will appear at. The address accepts exactly one message and expires after an hour. The email has to be sent by the person, from the platform or mailbox they really send from: half the checks read what that platform adds. The report covers 42 checks (SPF, DKIM, DMARC, reverse DNS, TLS, blocklists, content, links, the Gmail and Yahoo bulk-sender rules) and a plan of what to fix. lang is decided now because the message arrives minutes later over SMTP, which carries no hint of who is waiting for it. What wait_for_report returns quotes check lines in English whatever it is set to; the person following report_url sees their own language.

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).

Telephony MCP Server Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "khan2a-telephony-mcp-server": {
      "url": "https://api.nexmo.com/v1/calls"
    }
  }
}

Email Spam Tester Configuration

mcpServers (Claude Desktop / Cursor)

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

Frequently Asked Questions

Telephony MCP Server 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 Telephony MCP Server when you need capabilities focused on communication and Email Spam Tester when you require tools for communication.

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