Can Copilot Connect to Multiple Email Accounts?
Not really. Consumer Copilot connects to the Outlook.com account you sign into Copilot with, plus one Google account for Gmail. Microsoft 365 Copilot at work reaches your one work mailbox and has no Gmail connector at all. Neither answers a question that spans several inboxes.
With Carly, Copilot gets all of them. Add Carly to your Copilot agent and it works across every Gmail and Outlook inbox you own, personal and work, in one request.
Do this instead
- Connect every inbox at carlyassistant.com/integrations: Gmail and Outlook, personal Outlook.com addresses, and mailboxes in every Microsoft tenant you work in.
- In Copilot Studio, add Carly as a tool on your agent: choose Model Context Protocol, enter
https://carlyassistant.com/mcp/and sign in to Carly. It needs a work or school account and a paid licence. - Ask across all of them at once:
Check all my inboxes for anything from the auditors and tell me which threads still need a reply today.
Your inboxes work in Carly the moment you connect them, before anyone opens Copilot Studio. Get started at carlyassistant.com.
What Copilot can reach on its own
| Copilot on its own | Copilot + Carly | |
|---|---|---|
| Outlook.com accounts | The one you sign in with | All of them |
| Gmail accounts | One, in the consumer app | All of them |
| Work mailboxes in different tenants | Your one Microsoft 365 mailbox | All of them |
| Gmail in Microsoft 365 Copilot | No connector | Yes |
| Sends from Gmail | No, search and read only | Yes, with attachments |
| Starts work when mail arrives | No | Yes |
Microsoft’s own support page says the Outlook account you connect must match the Microsoft account you signed into Copilot with. Its “multiple account access” feature on the work side lets one Copilot licence work on a document from another account. It doesn’t search a second mailbox.
Two inboxes still means two answers
Ask Copilot “did the signed contract come back?” and it answers from the mailbox it holds. The contract sitting in your other inbox never comes up, and nothing in the reply tells you it looked in only one place. Switching accounts gets you the inboxes one at a time, so one client across every address you own, or one morning brief for all of them, stays out of reach.
What runs when nobody’s asking
Copilot acts when someone asks. Carly acts when the email arrives, in every inbox you connect:
- Text me when something urgent lands in any inbox, routine mail stays quiet.
- Label and file every message with your Outlook categories and folders or Gmail labels.
- Draft replies in your voice to the threads that need you, saved for review.
- Post a daily digest to Teams, grouped by inbox, so nobody opens five mailboxes.
- Log every invoice from every inbox to QuickBooks or a sheet.
Set them up from your Copilot agent or at carlyassistant.com/workflows, as free Zapier-style workflows. Carly connects to thousands of apps, Dynamics 365, SharePoint and Teams included.
Full walkthrough with the admin and maker routes: how to connect multiple email accounts to Copilot.
Frequently asked questions
Can Copilot connect to Gmail and Outlook at the same time?
In the consumer Copilot app, yes: your signed-in Outlook.com account plus one Gmail. Microsoft 365 Copilot has no Gmail connector. Through Carly, Copilot reaches every Gmail and Outlook inbox together.
Can Copilot read two Outlook mailboxes?
No. Consumer Copilot connects the Outlook.com account you sign in with, and Microsoft 365 Copilot reaches your own work mailbox. Connect each mailbox to Carly and Copilot can search all of them in one request.
Can I add Carly to the free Copilot app?
The consumer app has no place to add an outside connector. Copilot Studio is where you add Carly, on a work or school account.
Can Copilot send email from Gmail?
The consumer Gmail connector searches and reads. Through Carly, Copilot sends from any connected Gmail or Outlook account, attachments included.
How many inboxes can Carly hold?
As many as you connect at carlyassistant.com/integrations. Add a client’s mailbox when the work starts and remove it when it ends.
More: How to connect multiple email accounts to Copilot · Can Copilot connect to multiple Gmail accounts? · Can Copilot connect to multiple Outlook accounts? · Copilot multiple accounts · Microsoft Copilot alternatives
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