Added SendGrid MCP link to the README

[recepyavuz0]

Description

This PR introduces a comprehensive SendGrid MCP (Model Context Protocol) server that enables AI assistants to send emails, manage templates, and track statistics using Sendgrid SDK and SendGrid's API v3. The server provides 7 core tools for email operations including single/batch email sending, template management, scheduling, and statistics tracking.

Server Details

• Server: https://github.com/recepyavuz0/sendgrid-mcp-server
• NPM: https://www.npmjs.com/package/sendgrid-api-mcp-server

Motivation and Context

This MCP server addresses the need for AI assistants to have native email capabilities through SendGrid integration. It solves several key problems:

• Email Automation: Enables AI assistants to send emails directly without manual intervention
• Template Management: Allows dynamic email creation and management through AI
• Batch Operations: Supports sending emails to multiple recipients efficiently
• Scheduling: Provides future email scheduling capabilities
• Analytics: Offers email performance tracking and statistics
• Multi-client Support: Compatible with Claude Desktop, Cursor IDE, Zed, VS Code, and other MCP clients

How Has This Been Tested?

Tested with personal and external setups:

• Claude Desktop: Full integration testing with email sending, template usage, and statistics
• Cursor IDE: Tested all 7 tools on both my own and another user's setup.

Breaking Changes

No

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Protocol Documentation
• My changes follows MCP security best practices
• I have updated the server's README accordingly
• I have tested this with an LLM client
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have documented all environment variables and configuration options