To use Fezola in Grok, open grok.com/connectors, choose Add a custom connector, name it Fezola, paste https://api.fezola.com/mcp, leave the header empty and authorize on Fezola's consent screen. After that, a Grok chat can use your connected mailboxes and accounts through Fezola's tools. We tested this path on 15 November 2026 with a real Grok account, and the details below come from that test, from xAI's documentation and from Fezola's code.

What you need

A Grok account. xAI's documentation says connectors are available to all Grok users. On Business and Enterprise, an administrator has to provision the connector first.
A Fezola account with at least one source added. Fezola is free with 2 sources: see how Fezola connects your accounts.
The server URL: https://api.fezola.com/mcp.

Connect Fezola to Grok, step by step

Open grok.com/connectors.
Choose Add a custom connector.
Enter the name Fezola and the URL https://api.fezola.com/mcp.
Leave the header empty. Fezola does not need one.
Grok finds the sign-in settings by itself and opens a window on Fezola's consent screen, which reads that Grok asks for access to your Fezola sources.
Choose the sources Grok may use, then click Authorize.
You land back on Grok's connectors page, with Fezola listed.

If Grok shows "A problem occurred while connecting to this MCP server", try again from step 2. We hit that message during our test, found that our own server was refusing Grok's return address, and fixed it the same day, so the flow described here works.

What Grok can do with it

In a new chat, Grok lists Fezola's tools and calls them when your question needs them. In our test, Grok listed tools such as the profile, recent messages and Telegram chats, and called the account listing to see which sources were connected. You can ask, for example:

"Which accounts are connected through Fezola?"
"What arrived in my inbox today, all mailboxes included?"
"Find the email from my accountant and draft a reply."

Each search result carries its account, so you know which mailbox a message came from. A few things to know about what Fezola does:

Drafts, not sending. Fezola creates drafts in the mailbox that received the message. Direct sending is off by default. You can switch it on for a given mailbox in Fezola, and only then does Grok get a send tool.
Telegram and Google Chat are read-only.
Third-party text is data. The content of an email never counts as an instruction for the assistant.

Why use Fezola rather than one connector per account

A Grok connector holds one server URL. Fezola puts every mailbox, calendar and account behind that single URL, Gmail, iCloud, Outlook and IMAP included, so you add one connector instead of one per account. The same URL works in other assistants that accept custom connectors: see how to add a custom connector to Claude.

Remove or change access

You can remove the connector from grok.com/connectors, and you can revoke Grok's access from the Fezola app. To change which sources Grok sees, adjust it in Fezola: see choose which tools an AI assistant sees.

Next step

Create a free Fezola account, add your first source, then follow the steps above. Pro adds unlimited sources, with a 7-day free trial.

FAQ

How do I connect Fezola to Grok?

Go to grok.com/connectors, choose Add a custom connector, name it Fezola, paste https://api.fezola.com/mcp, leave the header empty and save. Fezola then opens its consent screen: pick the sources Grok may see and click Authorize.

Do I need an API key or a header?

No. The connector is added without any header. You sign in through Fezola's own consent screen, which is a standard OAuth flow, so there is nothing to copy or paste.

Which Grok plan do I need?

xAI's documentation says connectors are available to all Grok users. On Business and Enterprise, xAI says an administrator must provision the connector first. Check your own account, as plans change.

Can Grok read my mail through Fezola?

Yes. After the connection, Grok lists Fezola's tools in a chat and can call them, for example to list your connected accounts. Telegram is read-only. Fezola creates drafts rather than sending messages: direct sending is off by default and you can switch it on, mailbox by mailbox, in Fezola.

Can I choose what Grok sees?

Yes. The consent screen asks which of your Fezola sources Grok may use, and you can remove the connector from grok.com/connectors at any time.

Is it free?

Fezola is free with 2 sources. Pro connects unlimited sources, with a 7-day free trial.

Originally published at app.fezola.com. Written and published by Fezola's AI agents; facts checked against the code and the vendors' own pages.