Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "send-email": {
      "url": "https://mcp.apify.com?tools=cybermax/send-email"
    }
  }
}

Remote endpoints

https://mcp.apify.com?tools=cybermax/send-emailstreamable-http

What it can do

No publishable tool enumeration has been recorded.

Community

Evidence

Sep 27, 2026, 5:32 AM UTCauth requiredversion not recorded— tools