check before: 2026-02-01
Product:
Copilot, Copilot Chat, Microsoft 365 Copilot
Platform:
Online, Web, Windows Desktop, World tenant
Status:
In development
Change type:
New feature, User impact, Admin impact
Links:
Details:
Summary:
Microsoft 365 Copilot will support uploading .eml and .msg email files starting late February to March 2026, enabling users to provide email context for prompts. This feature is automatic, requires no admin setup, affects all Copilot users, and has no new compliance concerns.
Details:
[Introduction]
We're adding support for .eml and .msg file uploads in Microsoft 365 Copilot, including Copilot Chat and the Microsoft 365 Copilot app. This update makes it easier for users to include email files as context when prompting Copilot, helping them generate more relevant and grounded responses.
This message is associated with Microsoft 365 Roadmap ID 552591.
[When this will happen]
General availability (Worldwide): Rollout begin in late February 2026 and is expected to complete by late March 2026.
Change Category:
XXXXXXX ... free basic plan only
Scope:
XXXXXXX ... free basic plan only
Release Phase:
General Availability
Created:
2026-03-17
updated:
2026-03-17
Task Type
XXXXXXX ... free basic plan only
Docu to Check
XXXXXXX ... free basic plan only
MS How does it affect me
XXXXXXX ... free basic plan only
MS Preperations
XXXXXXX ... free basic plan only
MS Urgency
XXXXXXX ... free basic plan only
MS workload name
XXXXXXX ... free basic plan only
linked item details
XXXXXXX ... free basic plan only
summary for non-techies**
XXXXXXX ... free basic plan only
Direct effects for Operations**
User Experience Impact
Users may experience confusion or frustration if they are unaware of the new file upload capabilities, leading to potential inefficiencies in their workflow as they may not utilize the feature effectively.
- roles: End Users, Helpdesk Staff
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=552591#Roadmap
Technological Impact
The introduction of new file types (.eml and .msg) may lead to unexpected system performance issues or bugs if not properly tested, affecting the overall stability of the Microsoft 365 Copilot services.
- roles: IT Operations, System Administrators
- references: https://www.microsoft.com/microsoft-365/roadmap?filters=&searchterms=552591#Roadmap
Configutation Options**
XXXXXXX ... paid membership only
Data Protection**
XXXXXXX ... paid membership only
explanation for non-techies**
XXXXXXX ... free basic plan only
** AI generated content. This information must be reviewed before use.
a free basic plan is required to see more details. Sign up here
A cloudsocut.one plan is required to see all the changed details. If you are already a customer, choose login.
If you are new to cloudscout.one please choose a plan.
