Claude connectors: how to connect your apps to Claude
Which apps Claude connects to on its own, where its connectors fall short, and how to add any app to Claude as a custom connector in a few minutes.
Updated
Short answer
Claude connects to apps through connectors. You find them under Customize › Connectors on claude.ai, or in the Connectors Directory. Gmail, Google Calendar, Google Drive and Microsoft 365 are built in, and hundreds of companies list their own. For anything else, you add a custom connector by its address, on any plan. Free allows one.
Connectors vs MCP
MCP (Model Context Protocol) is the open standard, and an MCP server lets an assistant use another app. "Connector" is Claude's name for an MCP server you've added. Directory connectors are listed in Anthropic's catalog. A custom connector is any remote MCP server you add by URL. Both run on the same infrastructure. Claude Desktop also takes desktop extensions, which run on your own computer.
What Claude connects to on its own
| App | Built in? | Notes |
|---|---|---|
| Gmail | Yes | Search, read and draft. Sends, replies and forwards after you approve each one. One Google account. Can't read what's inside attachments. |
| Google Calendar | Yes | Create, change and delete events, find times that work, answer invitations. |
| Google Drive, Docs, Sheets, Slides | Yes | Search, read and upload. Live editing of Docs, Sheets and Slides is in beta. |
| Microsoft 365 (Outlook, OneDrive, SharePoint, Teams) | Work accounts only | Needs a Microsoft Entra tenant and an admin's consent. Sending only if the admin turns on write tools. No Outlook.com or Hotmail. |
| Slack, Notion, Linear, Asana, Atlassian, Todoist, ClickUp, Airtable, Stripe, Zapier | In the directory | Built by those companies, each with its own sign-in. |
| Booking.com, Expedia, Tripadvisor, Uber, Instacart, Resy, Spotify | In the directory | Mostly search and suggest. Hotel and flight bookings finish on the company's own site. |
| Websites you're signed in to | Claude in Chrome | Paid plans, desktop Chrome only, in your own browser. Won't make purchases. |
Sources: Anthropic on Google Workspace and Microsoft 365.
What's missing
- One account per connector. Claude's Gmail holds one Google account, so work and personal mail can't sit side by side. See how to connect multiple Gmail accounts to Claude.
- Personal Outlook. Outlook.com, Hotmail and Live accounts don't work with the Microsoft 365 connector. People have asked Anthropic since April 2026. See how to connect a personal Outlook account to Claude.
- One custom connector on Free. One app added by URL fills it.
- Settings that stay in Claude. You can block a connector's tools, and Team and Enterprise Owners set each to Always allow, Needs approval or Blocked. ChatGPT and Grok need their own setup.
- No history across chats. What Claude did is in each conversation, not in one list.
- A browser tied to your computer. Claude in Chrome needs Chrome open on your desktop. Cowork's built-in browser needs the Claude desktop app open and online.
How Upsy fills the gaps
Upsy is one custom connector that holds your apps, files, memory and a cloud browser. Connect your apps to Upsy once, and Claude reaches all of them through it. On Free, your one custom connector does the work of many.
- Up to five accounts per app: work and personal Gmail, or two Slack workspaces. Each account gets its own access.
- One connection for every assistant. Claude's directory already lists most apps, such as Todoist and Airtable. Connect one to Upsy once, through that company's own MCP server, and Claude, ChatGPT and Grok all use it.
- Personal Outlook through the cloud browser, where Claude reads and sends in outlook.com.
- Access per app and account: No access, Read-only, Full access, or only the actions you pick.
- A History of every action Claude takes, and email alerts if it deletes, sends or reads a lot at once.
- One memory that Claude, ChatGPT and Grok all read. See how to share memory between ChatGPT, Claude and Grok.
- A cloud browser signed in to your sites, where Claude works in its own tabs while you watch.
Upsy is free for personal use. It has no ads and doesn't sell your data. Claude never receives your app passwords or tokens. It calls Upsy's tools, and Upsy calls the app.
How to add Upsy to Claude
Sign up at upsy.ai and connect your apps on the Apps page.
In Upsy, click Add assistant, and under Which assistant? pick Claude. Copy your Upsy address:
https://upsy.ai/connectIn Claude, open Customize › Connectors and click Add custom connector. Name it Upsy, paste the address and click Add.
Click Connect next to Upsy. Sign in on the Upsy page that opens, choose what Claude can use, and click Allow.
On a Team or Enterprise plan, an Owner adds Upsy first under Organization settings › Connectors (Add › Custom › Web). Then you click Connect. The full walkthrough, with errors and fixes, is in how to add a custom connector to Claude.
Guides
- How to connect multiple Gmail accounts to ClaudeClaude's Gmail connector takes one Google account at a time. Connect your work and personal Gmail to Claude at once, up to five, each with its own access.
- How to connect a personal Outlook account to ClaudeClaude's Microsoft 365 connector needs a work account and an admin. How to let Claude read and send email from a personal Outlook.com or Hotmail account.
- Is it safe to connect Gmail to Claude?What Claude can see and do once Gmail is connected, the real risks, and how to give it read-only access, review what it did and turn it off fast.
- How to add a custom connector to ClaudeStep by step: add a remote MCP server to Claude as a custom connector, sign in with OAuth, and what changes on the Free, Pro, Team and Enterprise plans.
- Can Claude book flights and hotels for you?What Claude can and can't book today, where it stops at logins and payments, and how to let it work in a browser signed in to your travel sites.
- Can Claude fill out forms for you?How to get Claude to fill out online forms and applications with your details, in a cloud browser signed in to your sites, while you watch and approve.
- How to connect Zoho Mail to ClaudeClaude has no Zoho Mail connector. How to add one as a custom connector, with Zoho's own MCP server or with Upsy, and what each can do on each plan.
- How to connect Google Sheets to Claude and let it editClaude can now edit Google Sheets, in beta. What its Sheets connector and add-on do, and how to add Sheets through Upsy with read-only or per-action access.
- How to connect Google Docs to Claude and let it editClaude now edits Google Docs in beta. What its Docs connector and add-on can do, where they stop, and how Upsy adds real suggestions, comments and limits.
- How to connect Linear to Claude: connector and MCPClaude's Linear connector runs on Linear's own MCP server. Add Linear through Upsy to choose which actions Claude may take and see every change it makes.
- Claude GitHub connector: how to connect GitHub to ClaudeClaude's GitHub integration reads code from the repos you pick. How to set it up, why org repos go missing, and how to let Claude work on issues and PRs.
- How to connect Miro to ClaudeUse Miro's official connector in Claude, or add Miro through Upsy for a Read-only switch, a history of board changes and one Miro login for every assistant.