M365 Archive

RM496371 - Outlook: add attachments while offline in the new Outlook for Windows

Microsoft 365 Roadmap

Summary

We are adding more functionality to offline mode in the new Outlook for Windows. You will now be able to add attachments while drafting your email without an internet connection. #newoutlookforwindows

Roadmap ID

496371

View in M365 Roadmap

Last Updated

Oct 28, 2025

Published Jun 10, 2025

Status

Rolling out

Release

General Availability
Targeted Release

Platforms

Desktop

Service

Outlook

Tag

Rolling out
General Availability
Targeted Release
Worldwide (Standard Multi-Tenant)
GCC

Cloud

GCC
Worldwide (Standard Multi-Tenant)

Description

We are adding more functionality to offline mode in the new Outlook for Windows. You will now be able to add attachments while drafting your email without an internet connection. #newoutlookforwindows

GA date: October CY2025