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Roadmap ID 552591 Launched

Microsoft Copilot (Microsoft 365): Upload Local Files now Support .eml and .msg file types

Microsoft 365 Message Center Archive by Merill Fernando
Microsoft 365 roadmap entry

Summary

Users will now be able to upload .eml and .msg files and share it as context with Copilot Chat and M365 Copilot App.

Status
Launched
General availability target
Feb 2026
Preview target
Not published
Clouds
Worldwide (Standard Multi-Tenant)
Release phases
General Availability
Platforms
Desktop, Web
Source created
28 Jan 2026
Source modified
13 Apr 2026 · 7mo ago
ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 12 Nov 09:03 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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