How to Connect Multiple Gmail Accounts to Grok
One Grok conversation can search and act across every Gmail account you own. Connect each inbox to Carly, add Carly to Grok as a custom connector once, and name the account you mean in the question. The same Carly account holds your Outlook mailboxes and every calendar on both sides, so you set this up once for all of it.
1. Add your Gmail accounts to Carly
- Sign in at carlyassistant.com.
- Open carlyassistant.com/integrations.
- Find Gmail, click Connect, and authorize the account.
- Click Connect again for the next one, and keep going for as many accounts as you want.
A Google Workspace account may need administrator review. Ask the Workspace administrator to approve the connection, then finish authorization.
Carly connects to thousands of apps, so while you are on that page you can add your calendars, files, CRM, and anything else you want Grok to reach through the same connector.
2. Add Carly to Grok as a custom connector
- Go to grok.com/connectors.
- Click New Connector, then select Custom.
- Enter
https://carlyassistant.com/mcp/. - Complete the authentication step.
- Sign in to the Carly account holding the Gmail connections.
Grok discovers the tools Carly exposes and makes them available in conversations alongside its built-in connectors. On Grok Business and Enterprise, a team administrator provisions connectors in the cloud console before members can use them.
What one conversation can do afterwards
- Search personal and work Gmail in the same question.
- Compare threads sitting in different company accounts.
- Produce a daily summary grouped by inbox.
- Draft or send from the exact address you choose.
- Label, trash, or archive in the correct account.
- Check several calendars while writing to only one.
Nothing is merged. Each mailbox keeps its own credentials, and Carly keeps them individually addressable.
Why the accounts live in Carly
Carly authorizes each Google account separately and keeps them individually addressable, so an instruction can name one address and act only there. The fourth and fifth accounts connect exactly like the first, and nothing about the setup changes as you add them.
Grok’s Automations run on a schedule, and SuperGrok adds an email trigger that fires when an incoming message matches a sender, recipient, or subject filter.
Grok’s Gmail connector next to Carly
| Need | Grok’s built-in Gmail connector | Carly custom connector |
|---|---|---|
| Search one signed-in Google account | Yes | Yes |
| Keep several Gmail accounts connected at once | One sign-in per connector | Yes |
| Compare inboxes in one conversation | No | Yes |
| Send from a chosen connected account | The signed-in identity only | Yes, with that account’s permissions |
| Switch accounts without reauthorizing | No | Yes |
| Keep account-specific work running on a schedule | Schedule and email triggers on the signed-in inbox | Yes, across every connected account |
Carly gives Grok one account-aware toolset across every connected inbox. Carly offers free Zapier-style workflows; AI agents start at $35/month.
Quick fixes
| Problem | Fix |
|---|---|
| The second authorization replaced the first | Keep every inbox in Carly and leave the built-in connector on one identity |
| Workspace blocks authorization | Ask the Google Workspace administrator to approve Carly |
| New Connector is unavailable | On Business and Enterprise, ask the team admin to provision connectors in the cloud console |
| Grok searches the wrong inbox | Use the full address and require source attribution on every row |
| An automation watches the wrong mailbox | Route the work through Carly and name the account in the instruction |
Frequently asked questions
Can Grok connect two Gmail accounts?
Not in a way xAI documents. The connector flow signs in to one Google account, and no account picker or named-connection concept appears anywhere in the connector documentation. Connecting each inbox to Carly keeps them all reachable from one conversation.
Can Grok send Gmail messages?
Yes, on the built-in connector, once send tools are enabled. The gmail.send scope is requested at that point, and gmail.modify covers drafts, labels, and trashing. That capability applies to the one signed-in account.
Does Grok support custom MCP connectors?
Yes. xAI documents bringing your own MCP server at grok.com/connectors under New Connector → Custom, which is how Carly reaches Grok. The server has to be reachable over the public internet, which Carly’s hosted endpoint already is.
Can Grok react to a new email automatically?
On SuperGrok, an automation can fire on an incoming message matching a sender, recipient, or subject filter. xAI does not document which inbox is watched when several mail connectors exist.
Does this merge the inboxes?
No. Each account stays separately authorized and separately addressable, and requiring the source address on every row keeps it obvious which inbox an answer came from.
Related: Grok connectors · Multiple Gmail accounts in Grok Bot · Multiple Outlook accounts in Grok · Manage multiple email accounts with AI
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