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

#552591 · Launched · February 2026 rollout

Microsoft 365 roadmap: what is new · All roadmap items · Microsoft

SummaryDetailedTimelineProduct updatesThis weekMC SummaryMC DetailedPnP Search
Launched
Rollout startFebruary 2026

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

Microsoft Copilot (Microsoft 365)
TimelineOpen at Microsoft

Added to roadmap: 28 jan 2026 | Last modified: 13 apr 2026

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