Sidemail MCP Server seamlessly integrates Sidemail.io's robust transactional email, contact, domain, and Messenger functionalities with various Model Context Protocol (MCP) clients such as VS Code, Claude Desktop, and Cursor. This powerful tool empowers developers to efficiently manage sending domains, test transactional emails, organize contacts and groups, and create or update Messenger drafts directly from their preferred development environment, significantly streamlining workflows for email and communication automation.