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
Official documentation checked October 14, 2026. Copilot access to a shared mailbox depends on the Copilot experience and the user’s existing mailbox or folder permissions. Outlook auto-mapping is a convenience for opening a mailbox in a profile; it is not a separate Copilot authorization registration. Do not remove existing permissions or convert mailbox types merely … Read more
Official documentation checked October 14, 2026. Copilot can help draft a message while you work with a shared or delegated mailbox, where that experience is supported. Permission to draft or read mailbox content and permission to send on behalf of the owner are separate. There is no documented Copilot account selector that turns a draft … Read more
When you use Copilot in Outlook to compose an email, it can automatically insert your email signature at the bottom of the message. If you manage multiple email accounts in the same Outlook profile, you may notice that Copilot inserts the signature from your default account rather than the account you are sending from. This … Read more
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
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
When Copilot in Outlook misses an older message, first establish where that message is and whether the particular Copilot feature supports that mailbox. Do not extend retention, exempt a folder or automatically copy email just to make a summary work. Those changes can undermine an organization’s approved disposal and preservation requirements. This guide separates mailbox … Read more
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
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
You open an email in Outlook on your iPhone or iPad and expect to see the Copilot Summarize button. Instead, the button is grayed out or completely missing. This problem usually occurs because your Microsoft 365 license lacks the Copilot feature, or because the app version does not support the button yet. This article explains … Read more