How to use Google Chat in Claude and ChatGPT

What your assistant can do with Google Chat

• Catch up: messages received in direct messages and group chats, and messages that mention you, since a given time.
• Find what you have not answered: each message says whether you wrote later in the same conversation.
• See unread conversations: spaces, group chats and direct messages, most recently active first, with an unread flag for the 30 most recent.
• Search: Google Chat's own search across your conversations, or a single space over up to 90 days.
• Read a whole thread or conversation, with a link to open it in Google Chat.

Other ways to do it

Google offers its own Google Chat MCP server, in Developer Preview. It needs your own Google Cloud project with the Chat APIs enabled and an OAuth client, which suits developers more than everyday users. Open-source servers exist too, but you host them yourself.

Fezola needs no Google Cloud setup, and puts Google Chat in the same connector as your email and Telegram, so one question can cover all of them.

Beta while Google verifies Fezola

Google is still verifying Fezola's access to Google Chat. Until it is done, Google shows a warning screen when you sign in (click Advanced, then Go to Fezola), and the number of Google accounts that can connect is limited. The app tells you if the beta is full.

Step by step

1. 1

   Create a Fezola account

   Sign up for free. The Free plan includes 2 sources: Google Chat and one mailbox, for example.

2. 2

   Connect Google Chat

   Open Google Chat in the Fezola menu and click Connect Google Chat. Sign in with your Google account and accept the read-only permissions.

3. 3

   Add your mailboxes (optional)

   In Sources, add Gmail, iCloud or any IMAP mailbox, so your assistant can answer across chat and email.

4. 4

   Add Fezola to Claude or ChatGPT

   In Claude: Customize, Connectors, + Add, Add custom connector, name it Fezola and paste https://api.fezola.com/mcp. In ChatGPT (paid plans): Settings, Apps & Connectors, Advanced settings, turn on Developer mode, then Create a connector with the same URL and OAuth.

5. 5

   Approve access

   Your assistant opens a Fezola sign-in and consent screen listing the sources it will access. Once you accept, the tools are available in your conversations.

6. 6

   Ask about your conversations

   Try: “What did my team say in Google Chat this morning?”, “Which direct messages have I not answered since Friday?” or “Find the message where we agreed on the launch date.”

Why Fezola

• Google Chat next to Gmail, iCloud, any IMAP mailbox and Telegram, in one connector.
• No Google Cloud project, API or OAuth client to set up.
• Read-only: nothing is sent, and reading does not mark conversations as read.
• Works in Claude, ChatGPT, Perplexity and other MCP clients.
• Messages are read live and never stored; Google tokens are encrypted.

Questions

Sources

• Google for Developers: Google Chat MCP server (Developer Preview)

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