How to Use Copilot in Outlook to Book Room Mailboxes by Capacity

Booking a meeting room that fits your group size in Outlook can be time-consuming. You open the room finder, scroll through lists, and check capacity manually. Copilot in Outlook can automate this task. It reads your meeting request and finds available room mailboxes that match the number of attendees you specify. This article explains how … Read more

Copilot in Outlook With Shared Mailboxes: Permission Inheritance Explained

You have access to a shared mailbox in Outlook, but Copilot cannot read its emails or suggest replies. This happens because Copilot uses a different permission model than the classic Exchange client. Standard mailbox access granted through Outlook does not automatically extend to Copilot. This article explains how permission inheritance works for shared mailboxes in … Read more

How to Configure Copilot in Outlook for Send-On-Behalf-Of Permissions

When you manage another person’s mailbox in Outlook, you may need Copilot to draft emails that appear to come from that person. Without proper configuration, Copilot will use your own identity and signature instead of the shared mailbox owner’s. This happens because Copilot in Outlook respects the same Send-On-Behalf-Of permissions that Exchange Online enforces for … Read more

How to Use Copilot in Outlook With S/MIME Signed Email Threads

You need Copilot to summarize or draft replies in an Outlook thread that contains S/MIME signed messages. S/MIME signing applies cryptographic protection, which can block Copilot from reading the email body content. This article explains why S/MIME signed threads cause Copilot to fail and how to configure Outlook and Microsoft 365 to let Copilot process … Read more

Copilot in Outlook With Microsoft Purview Message Encryption: Behavior

You are composing an encrypted email in Outlook and want Copilot to help draft, summarize, or suggest replies. But Copilot may not work as expected when Microsoft Purview Message Encryption is active. This behavior occurs because encryption restricts how Copilot reads and processes email content to protect sensitive data. This article explains exactly what happens … Read more

How to Use Copilot in Outlook With Retention Policies on Inbox Items

You want to use Copilot in Outlook to summarize, draft, or analyze your inbox messages, but your organization applies retention policies that automatically delete or archive items after a set period. Retention policies can remove messages before Copilot processes them, causing incomplete results or errors. This article explains how retention policies interact with Copilot in … Read more

Copilot in Outlook on the Web vs New Outlook: Feature Gap Reference

Users who rely on Copilot in Outlook often switch between Outlook on the Web and the new Outlook for Windows app. They notice that some Copilot features appear in one version but not the other. This gap causes confusion about which commands are available in each client. This article provides a direct feature-by-feature comparison of … Read more

How to Use Copilot in Outlook Mobile on Android

You want to use Copilot directly inside Outlook Mobile on your Android phone to draft emails, summarize long threads, or prepare replies without switching apps. Copilot in Outlook Mobile connects to your Microsoft 365 account and uses your mailbox data to generate responses based on your writing style and the conversation context. This article explains … Read more