What is MCP? A plain-English guide for people who don't code
MCP, the Model Context Protocol, explained without code: the USB-C analogy, what an AI assistant can do with it, local versus hosted, and what to check.
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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What is an email MCP server, and what can it do with your inbox?
An email MCP server lets Claude or ChatGPT search and draft in your mailbox. What it is, how it works, what it can read and change, and what to check first.
All articles in MCP basics
MCP basics
ChatGPT connectors and apps: what exists, how to add a custom MCP server, which plans
ChatGPT connects to tools through apps in Settings, Plugins, and, on Business, Enterprise and Edu, custom MCP servers. What exists, how to add one, which plans.
2 min read
MCP basics
Which Claude and ChatGPT plan do you need for custom connectors and MCP servers?
Claude allows custom connectors on Free (one), Pro, Max, Ultra, Team and Enterprise. ChatGPT on Business, Enterprise and Edu, Pro read-only. Checked Nov 2026.
2 min read
MCP basics
Claude connectors: what they are, how to add one, which plans, the best ones
Claude connectors link Claude to outside tools: built-in ones such as Gmail, and custom ones for any remote MCP server, added from Customize, Connectors.
2 min read
MCP basics
Claude Cowork connectors: how to add them and what works in Cowork
Custom connectors work in Claude Cowork on every plan that allows them. Add one from Customize, Connectors, then switch it on per conversation. Nov 2026.
2 min read
MCP basics
Fezola in Grok: connect your mailboxes and accounts as a custom connector
How to add Fezola to Grok as a custom connector: grok.com/connectors, one URL, no header, then your mailboxes and accounts in a Grok chat. Tested on 15 Nov 2026.
3 min read
MCP basics
MCP vs API: what is the difference, and when do you need which?
An API connects software to software; MCP lets an AI assistant discover and use tools built on APIs. A plain comparison table, when each fits, and how Fezola uses both.
2 min read
MCP basics
Gemini and Perplexity MCP: add a custom MCP server (Copilot too)
Yes: the Gemini app accepts custom MCP apps (US, 18+, personal account) and Perplexity accepts remote MCP connectors. Copilot too. Checked 15 Nov 2026.
4 min read
MCP basics
What is an MCP connector? A plain definition, with an example
An MCP connector is the link that lets an AI assistant use a tool through the Model Context Protocol: you paste a URL and sign in. How it differs from a server.
2 min read
MCP basics
Zapier or Make vs MCP: which one for your AI assistant?
Zapier and Make automate fixed workflows, MCP lets an assistant use tools in conversation. What each does, what Zapier MCP and Make MCP cost, and when to combine.
3 min read
MCP basics
Remote MCP server or local one: which should you use?
A local MCP server runs on your computer, a remote one on a provider's servers. What changes for setup, updates and security, and what Claude and ChatGPT use.
2 min read
MCP basics
Best MCP (Model Context Protocol) servers for Claude and ChatGPT in 2026, by job
The best Model Context Protocol (MCP) servers match a job you do weekly and let you control access: email, calendar, notes, ads, SEO, social media, voice.
2 min read
MCP basics
How to add a custom connector to Claude (and what the free plan allows)
How to add a custom MCP connector to Claude: the exact menus, what the free plan allows, connection options, removal and precautions to take.
4 min read