How to Connect Multiple Gmail Accounts to Le Chat
One Le Chat conversation can search, draft, and send across every Gmail account you own once Carly is holding them. Authorize each Google identity in Carly, add one custom MCP connector in Le Chat, and the conversation addresses whichever inbox you name. The same Carly account holds your Outlook mailboxes and every calendar on both sides, so you set this up once for all of it.
What one conversation can do afterwards
- Search a personal address and two work addresses in the same question.
- Pull the quote, the contract, and the invoice out of three different inboxes at once.
- Build a morning briefing grouped by account.
- Draft or send from the exact address you name.
- Label, archive, or move mail in the correct inbox.
- Read several calendars while writing to only one.
Nothing is merged and nothing is forwarded. Each Google identity keeps its own authorization, and Carly keeps every account separately addressable.
Why the accounts live in Carly
Carly authorizes each Gmail or Google Workspace identity as its own connection and exposes all of them through a single server that addresses any account by email address. That is what makes “which of my three inboxes has the signed contract” a question one conversation can answer, and it is why adding a fourth account later changes nothing on the Le Chat side.
Le Chat is the interface in this setup, not the account store. You keep the assistant you already use and stop thinking about which inbox it happens to be pointed at.
Connector authorization is per identity, not per person. ChatGPT, Claude, and Gemini each hold one Google account at a time, so the second inbox is reachable only by replacing the first. Both OpenAI and Anthropic have open feature requests asking for several named accounts on one connector, which is a fair signal that it is not possible today.
1. Give each Gmail account a role
For example, all fictional:
| Address | Role |
|---|---|
fictional.amara.diallo@gmail.com | Personal |
fictional.amara.diallo@stripe.com | Main Company |
fictional.amara.diallo@shopify.com | Client |
Use the role in ordinary questions and the full address before anything that changes an inbox.
2. Connect every Gmail account to Carly
- Sign in at carlyassistant.com.
- Open carlyassistant.com/integrations.
- Find Gmail and click Connect.
- Choose the first Google account and approve access.
- Confirm the connected address in Carly.
Repeat for each additional identity, choosing Use another account if Google preselects the first login. Verify the full address after every authorization before adding the next.
If a Google Workspace account requires administrator review, ask that Workspace administrator to approve the connection, then finish authorization. Each Workspace approves independently.
3. Add Carly to Le Chat as a custom MCP connector
This is the step that makes the inboxes reachable, and it is the one people skip. Le Chat splits connectors into featured connectors you click to authorize, a directory of partner MCP servers, and custom MCP connectors, which let you point Le Chat at any remote MCP server you trust. Carly is added through the third route.
Open Le Chat’s Connectors settings, choose the option to add a custom MCP connector, and give it:
- Name:
Carly - Server URL:
https://carlyassistant.com/mcp/
Carly’s server is hosted, so there is nothing to deploy and no key to paste. It authorizes over OAuth, so complete the sign-in to the Carly workspace holding your Gmail accounts. Once the connection is made, Carly’s mail, calendar, and workflow tools appear alongside your other connectors, and Mistral registers connectors centrally, so the same connection is available across Le Chat and AI Studio rather than being set up per app.
4. Test every inbox read-only first
Take one account per question to start:
In
fictional.amara.diallo@stripe.com, list the sender and subject of the five newest unread messages. Do not change anything.
In
fictional.amara.diallo@shopify.com, find the newest thread containing “renewal.” State the source account and do not draft.
Then the cross-account question:
Search the Stripe and Shopify example accounts for “invoice” from the last 30 days. Include the full source address in every row.
5. Reuse this routing prompt
Treat
fictional.amara.diallo@gmail.comas Personal,fictional.amara.diallo@stripe.comas Main Company, andfictional.amara.diallo@shopify.comas Client. Always state the target address before changing data. Ask before sends, moves, deletes, or labels.
Then name the target in each action:
Draft the reply from
fictional.amara.diallo@stripe.com. Do not send yet.
Add the Clients label in
fictional.amara.diallo@shopify.comonly.
Send the approved reply from the account that received the original thread.
Keep approvals on while you are testing. Three inboxes and send scopes is worth a confirmation step.
The part that outlives the conversation
A conversation ends when you close it. Inbox work does not. Triage every morning, the follow-up on a quote that went quiet, the receipt that has to reach the bookkeeper, the client who asks the same question every month: all of it recurs, and starting each one by hand is the real cost.
That work belongs in a Carly workflow or a Carly agent, which runs with nothing open and no conversation attached. Carly watches each connected mailbox as its own trigger source, so a rule can fire on mail arriving in the client account and stay silent on the personal one. Le Chat then becomes the place you go to ask about work that is already handled, rather than the thing that has to be open for the work to happen.
One connector versus one account at a time
| Need | A per-account mail connector | Carly through custom MCP |
|---|---|---|
| Read and act in one inbox | Yes | Yes |
| Hold several Gmail accounts at once | One authorization at a time | Yes, all at once |
| Answer a question spanning two inboxes | Not in one conversation | Yes |
| Address a specific account in a prompt | No shared convention | Yes, by email address |
| Add a fourth account later | Another authorization to manage | No config change |
| Keep the work running between conversations | No | Yes |
Carly gives Le Chat one account-aware mail toolset instead of a connector you keep re-pointing. Carly offers free Zapier-style workflows; AI agents start at $35/month.
Quick fixes when an inbox does not appear
| Problem | Fix |
|---|---|
| Carly’s tools are missing in Le Chat | Reopen the connector and let it refetch the tool list |
| The connector will not authorize | Finish the OAuth sign-in in the browser tab Le Chat opens |
| Google connected the same Gmail twice | Remove the duplicate in Carly and reconnect with Use another account |
| A Workspace blocks authorization | Ask that Workspace administrator to approve Carly |
| Le Chat queries the wrong inbox | Use the full address and require source attribution |
| A send went from the wrong account | Add the routing prompt above and keep approvals on |
Frequently asked questions
How many Gmail accounts can this reach?
As many as you authorize in Carly. Le Chat connects to one server, so the account count is a Carly setting rather than a Le Chat one.
Does this work for Google Workspace as well as personal Gmail?
Yes. Both are Google identities and each is authorized separately in Carly. A managed Workspace may need its administrator to approve the connection first.
Can I add Carly if I am not an administrator?
Custom MCP connectors are the route for connecting a remote server you trust, so you are not waiting on a directory listing. If your organization restricts which connectors can be added, that decision sits with your Le Chat administrator.
Can the same setup cover Outlook?
Yes. Connect Outlook mailboxes in the same Carly account and one conversation reaches both providers. The multiple Outlook accounts in Le Chat guide covers that side.
Related: Multiple Outlook accounts in Le Chat · Multiple Gmail accounts in Claude Code · Best AI assistants for multiple Gmail accounts · What is MCP · Gmail MCP
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