Normally an AI chat is sealed off from everything else you use. Want it to work on an email? You go and find the email, copy it, paste it, explain what it is.
A connector removes the pasting. It is a link between the AI and a tool you already use, so it can read from that tool, and sometimes write to it, with your permission.
MCP stands for Model Context Protocol. It is the open standard that makes this possible: a common language for how an AI talks to an outside tool, so that every app does not need its own bespoke arrangement with every AI. Anthropic published it and the rest of the industry picked it up, which is why the same word keeps appearing everywhere.
That is the whole of what the acronym means, and you will never need it again. When someone says "there is an MCP for that", they mean your AI can be connected to it. Most tools now just call them connectors in the settings, which is the friendlier word for the same thing.
The difference in daily use is large. Without: "let me find that email, copy it, paste it, explain it." With: "summarise this week's customer emails and draft replies to the 3 that need me."
That is also exactly why the permissions deserve 5 minutes of your attention before you switch anything on.
What Claude's connectors can actually do
Verified against Anthropic's own documentation, August 2026. Check it yourself before you rely on it, because this area changes faster than any other part of these tools.
| Connector | What it does |
|---|---|
| Gmail | Searches and reads your email in plain language, reads metadata and attachment details, works with labels and threads, and writes drafts straight into your Gmail account |
| Google Calendar | Sees your availability, schedules meetings, manages invites, and can RSVP for you |
| Google Drive | Finds and reads your documents so you can work on them in the conversation |
| Notion | Searches your workspace, creates pages with real structure, updates page properties |
The part worth knowing before you plan around it: Google Workspace connectors (Gmail, Calendar and Drive) are available to all users, including free. Connectors to other remote apps and services are paid plan only. So the 3 that matter most to a small business are the 3 you can try without spending anything.
On sending email, because people ask. Claude's own Gmail connector writes drafts into your account and leaves the sending to you. That is a deliberate choice by that particular connector, not a rule about what AI can do with email. Other setups can and do send. It is worth knowing which kind you have connected, because "it drafts and I send" and "it sends" are very different arrangements to have running in your business.
Sources: Claude's connectors overview, the Google Workspace connector docs, and the connector directory.
The 2 questions to ask before connecting anything
What can it see? Connecting your inbox means it can read your inbox. All of it, not the bits you had in mind. If that inbox contains client financials, medical details, or anything covered by an agreement you signed, that is a decision, not a formality.
What can it change? Reading is low stakes. Writing, sending, deleting and editing are not. Prefer setups where the AI drafts and you press send, at least until you have watched it work for a few weeks. The fact that Gmail's connector deliberately cannot send is a good default, and worth noticing as a design choice rather than a limitation.
The permission screen is the contract
When you connect something, you get a screen listing what you are granting. Almost everyone clicks through it. It takes 30 seconds to read and it is the only place the real answer to both questions above is written down.
3 things to look for:
Read or write. The wording usually distinguishes "view" from "manage" or "modify". If it says manage, it can change things.
Scope. Is it your whole account or one folder, one calendar, one workspace? Narrower is better and it is often an option.
Whose account. If you share a business login, you are granting access to everything that account can reach, including anything a colleague put there.
A sensible order to do this in
Start with the calendar. Highest payoff for lowest risk. "What does my week look like, and where is it going to fall apart" is a genuinely useful answer and your calendar is the least sensitive thing you own.
Then Drive or Notion, whichever holds your documents. Read access to the place your files live is the connector that changes the most about daily work.
Email last, and think about it properly. It is the most useful and the most exposing. If your inbox has client confidential material in it, the honest answer might be no, or a separate account.
One at a time, a fortnight apart. Connecting 5 things in one afternoon means that when something behaves oddly you have no idea which one to look at.
Test it with something read-only
First request after connecting anything, always:
Using the connector I just set up, tell me what you can see. Do not change anything. Summarise the scope of what you have access to, then answer this: [something small and specific].
If the scope it describes is wider than you expected, that is your answer about whether the permission was right.
What a connector will not fix
A connector does not make it accurate. It can read your calendar and still misread it. Everything from the hallucination guide still applies; the facts are just better sourced.
Connected does not mean monitored. It sees your tools when you ask it to, in a conversation. It is not sitting there watching your inbox.
Anything outward-facing needs a human. The productivity is in the drafting. The safety is in you pressing send. Set that as your rule before you have a busy Friday and are tempted otherwise.
Client confidentiality is your problem, not the tool's. If you handle other people's sensitive information under an agreement or a professional obligation, whether you may connect it at all is a question for that agreement. It is not answered by the permission screen.
This changes constantly. Which connectors exist, what they can do, and what is free have all moved more than once this year. Anything in this guide that matters to your decision, check on the day.
Connect the calendar first
Connect the calendar. Then ask what your week looks like and where the collisions are. It costs nothing, it reveals nothing sensitive, and it is the fastest way to understand what the fuss is about.