MCP basics
How to add an MCP server to ChatGPT, step by step (November 2026)
How to add a custom MCP server to ChatGPT: the current steps in Plugins, the plans concerned, OAuth, common errors and an example with an email server.
4 min read
MCP explained: connectors for Claude and ChatGPT
MCP, the Model Context Protocol, is the standard that lets Claude, ChatGPT and other assistants talk to outside tools. This category explains it without jargon. You will learn what an MCP server is and what an email MCP server does, how to add a custom connector to Claude and to ChatGPT, and how to use the same connector from developer tools such as Claude Code, Cursor, VS Code, Codex and Windsurf. A comparison of email MCP servers helps you choose between hosted services and projects you run yourself, with the tradeoffs on setup, security and multiple accounts. If you are new to connectors, read the MCP explainer first, then follow the guide for the assistant you use every day.
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MCP basics
Best email MCP servers for Claude (and ChatGPT Business) in November 2026
The best email MCP server depends on your setup: built-in for one Gmail, self-hosted for control, hosted like Fezola for several mailboxes. Checked 15 Nov 2026.
9 min read
MCP basics
How to add all your inboxes to Claude Code and Claude Cowork
Run claude mcp add --transport http with your Fezola URL, then /mcp to sign in. Claude Code can then search Gmail, iCloud and IMAP, results naming accounts.
3 min read
MCP basics
Email in Cursor, VS Code, Windsurf and Codex CLI with one MCP server
Add one email MCP server to Cursor, VS Code, Windsurf or Codex CLI: exact config for each, how the OAuth sign-in works, and what is verified or still untested.
3 min read