# Extend MCP: Use Extend in Slack and Email

Source: https://maito.app/integrations/extend

Connect the Extend MCP server to Maito with one sign-in, and your whole team can use it from Slack or email: “Pull the vendor, total and due date from these 15 invoices.”

Extend turns documents like invoices and forms into structured data. Connect the Extend MCP server to Maito once, and everyone on your team can use Extend from Slack, by email, or from Claude, ChatGPT, Cursor, Codex, Grok or Muse. Nobody else has to sign in.

-   Connects in one click
-   Sign in with Extend
-   One connection for the whole team
-   Server by [Extend](https://www.extend.ai/)

Updated October 21, 2026

## What you can ask with Extend

Requests to Maito

![Dana](https://maito.app/marketing-avatars/dana.webp)

Dana in Slack

Pull the vendor, total and due date from these 15 invoices.

![Sam](https://maito.app/marketing-avatars/sam.webp)

Sam by email

Extract the policy number and coverage dates from this insurance PDF.

Maito uses Extend to do the work and replies where you asked.

## How to connect Extend

Open Connections in your workspace and choose Connect next to Extend. You sign in to Extend in a new tab, and that's the whole setup. Name the account and choose Workspace under who can use it. That's the only time anyone signs in: your whole team, shared chats and Loops can use Extend from then on. Or skip ahead and ask for the work: Maito sends you a link if Extend isn't connected yet.

## Questions

### What is the Extend MCP server URL?

Extend publishes it at https://mcp.extend.ai/mcp, and it signs in with OAuth, so there's no key to copy.

### Can I use the Extend MCP server from Slack?

Yes. Connect it to Maito once, then mention Maito in any Slack channel or send it a direct message. The same connection works by email and from Claude, ChatGPT, Cursor, Codex, Grok or Muse.

### Does everyone on my team have to connect Extend?

No. One person connects it once and chooses Workspace. Then everyone in the workspace, shared chats and Loops can use Extend, without signing in themselves. Choose Only me instead to keep it to your own chats.

### Do I have to connect Extend before I ask?

No. If a request needs Extend and it isn't connected yet, your agent sends you a link. Connect it, and the work picks up where it stopped.

### Can I limit what Maito does in Extend?

Yes. After you connect, turn off any Extend tools you don't want Maito to use, such as the ones that change data. Tools Extend adds later stay off until you turn them on.

## Also in Docs and files

-   [Supermemory Supermemory saves documents, notes and memories you can search later.](https://maito.app/integrations/supermemory)
-   [Notion Notion is your team's docs, wikis and databases.](https://maito.app/integrations/notion)
-   [Atlassian Atlassian's connector covers Jira, Confluence, Bitbucket and Loom, with your existing permissions.](https://maito.app/integrations/atlassian)
-   [Airtable Airtable holds structured data in bases your team builds.](https://maito.app/integrations/airtable)
-   [Dropbox Dropbox stores and shares your team's files.](https://maito.app/integrations/dropbox)
-   [Adobe Experience Manager Adobe Experience Manager holds your website content, pages and assets.](https://maito.app/integrations/adobe-experience-manager)

[See all integrations](https://maito.app/integrations)

## Put your AI employee to work.

Set it up in minutes. Connect Extend, then hand Maito the first job.

[Put Maito to work](https://maito.app/login?returnTo=%2Fintegrations%2Fextend)[Book a demo](https://cal.com/ddubovetzky/chat-with-the-founder)