Updated: July 22, 2024 (April 28, 2024)

Targeting Trouble Spots in the New Outlook

As managing vice president, Rob Helm covers Microsoft collaboration and content management. His 25-plus years of experience analyzing Microsoft’s technology... more

July 17, 2024: Microsoft has announced more detailed plans for new Outlook. See “New Outlook: Two Years to Breaking Changes in M365“.

Feature	Feature Summary	Outlook M365	Outlook M365
Feature	Feature Summary	Classic	New
Offline Support	Access mail and other items while disconnected from Exchange.	Yes	Planned
Exchange Server	Connect to Exchange Server systems other than Exchange Online	Yes	No plan
Delegation	Grant a user access to another user’s mailbox.	Yes	Yes
Shared Mailbox	Access Exchange shared mailboxes.	Yes	Yes
Public Folder Access	Access (create, read, update, delete).	Yes	Read and update.
Import and export files	Import and export mailbox data through .PST and other file types	Yes	Planned
Standard Internet accounts	Use maiboxes accessed through standard Internet client protocols.	Yes	IMAP: Yes
Standard Internet accounts		Yes	POP: No plan
COM Add-Ins	Use Outlook COM add-ins (including VSTO add-ins) to extend client	Yes	No
Team and Group Resources	Access group mailboxes, file libraries, and other resources.	Yes	Yes
JavaScript Add-ins	Use Outlook add-in JavaScript

Atlas Members have full access

Get access to this and thousands of other unbiased analyses, roadmaps, decision kits, infographics, reference guides, and more, all included with membership. Comprehensive access to the most in-depth and unbiased expertise for Microsoft enterprise decision-making is waiting.

Membership Options

Already have an account? Login Now