    servers/
        communication/
        email-preflight
  

EP

Email Preflight

Unverified Claim & verify → Communication

Email preflight x402: $0.001 USDC on Base. MCP returns unpaid 402 only; no signing or payment.

Try Remote Server

Overview Installation

Overview

Email Preflight is an MCP server that implements email preflight checks with HTTP 402 payment required responses. It operates on Base blockchain using USDC tokens at $0.001 per check. The server returns unpaid 402 status codes only, with no signing or payment handling required on the client side.

Hosted remotely at https://email-preflight-mcp.onrender.com/mcp, Email Preflight requires no local installation or authentication. The latest release is v0.2.0. Connect your MCP client directly to the endpoint and gain instant access to its tools.

Email Preflight sits in the Communication category on mcp.site and works with Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed, and any MCP-compatible client. If you maintain this server, claim this listing to verify ownership and keep information up to date.

▸Hosted endpoint — Streamable HTTP · https://email-preflight-mcp.onrender.com/mcp

Installation

Settings → Connectors → Add custom connector
Name: Email Preflight
URL:  https://email-preflight-mcp.onrender.com/mcp

Related servers

IA

Inside Ads

Communication Remote

Telegram ad exchange: estimate reach and cost with no account, then create and run campaigns.

        Added 1 month ago
    →
  

AS

Askline

Communication Remote

Askline shows what ChatGPT says about a brand, then the SEO that feeds it.

        Added 1 month ago
    →
  

AwrAIter — Telegram channels

Communication Remote

Telegram channels you administer: analytics, content plans, scheduled publishing. No userbot.

        Added 1 month ago
    →
  

AS

Apple Search Ads

Communication Remote

Manage Apple Ads campaigns and reporting in chat.

        Added 1 month ago
    →
  

CR

Chess Results

Communication Remote

Live chess tournament results and up-to-date player ratings in chat.

        Added 1 month ago
    →
  

FE

Feedback

Communication Remote

Capture feature requests and bug reports from chat into a searchable, AI-categorized backlog.

        Added 1 month ago
    →
  