New vs old Outlook

Microsoft currently offers two versions of Outlook. Outlook old and Outlook new, currently you can opt to use either version but with the introduction of Windows 11 the new Outlook version will become the norm. You can find more information about the new Outlook version via the Microsoft's website.

Here is a current overview of the key differences between them.

Explore personalization options and settings

If you switched from the classic Outlook for Windows or from the Mail app, you'll have the option to migrate some of your settings, which you can learn more about here. However, it's still good to familiarize yourself with the latest options. You'll find Settings in the gear icon in the upper right corner. You can also make quick updates to certain settings by clicking on the View tab.

Changes you make to settings in the new Outlook for Windows will also be reflected in Outlook on the web.

Pin emails

Do you ever have trouble tracking down that key email thread you’re actively responding to? Or is there an email with key information you frequently refer to? Now, simply right-click any message and choose Pin and that email will appear at the top of your inbox, saving you time from having to go back and search for it.

Snooze email

Sometimes email is very important, but not yet. With the Snooze feature, you can schedule a time for the email to be re-delivered to your inbox, appearing at the time you want it to, so you can handle it when it’s the right time for you. Just right-click any message and choose Snooze, or select Snooze from the ribbon. Then choose the time you want it to be delivered.

Schedule when to send email

In today’s hybrid work world, your day might be someone else’s night, so you don’t want to send an email to someone in the middle of the night. With the new Outlook, it’s simple to send an email when you want to. Just select the dropdown arrow next to Send and choose Schedule send.

Support and differences between Outlook versions

Feature

Outlook on the web

Outlook for Windows

Windows Mail app

New Outlook for Windows

Pin emails
Pin a message to move it to the
top of your inbox so it's easy
to find later.

Yes

No

No

Yes

Snooze emails
Snooze an email to temporarily
remove it from your inbox and
schedule it to appear as a new
mail for later, when you can respond.

Yes

No

No

Yes

My Day view
Use My Day to see your upcoming calendar events
and tasks anywhere in Outlook, including Mail, Calendar, and People.

Yes

Yes**

No

Yes

Inbox rules
Use inbox rules to automatically perform specific actions on email that arrives in your inbox.

Yes

Yes

No

Yes

Conversation settings
You can change the appearance
of the message list and reading
pane. Email in the message list
can be displayed as individual
messages or grouped by conversation.

Yes

Yes

Yes

Yes

Loop components
Use loop components to collaborate within Outlook.

Yes

No

No

Yes

Microsoft 365 account
Support for Microsoft 365 account.

Yes

Yes

Yes

Yes

Outlook.com account
Support for Outlook.com account.

Yes

Yes

Yes

Yes

3rd party (Gmail, Yahoo, etc.) accounts
Support for 3rd party accounts.

Yes***

Yes

Yes

Yes***

Multi-account support
Access multiple accounts from your Outlook client.

Yes***

Yes

Yes

Yes

PST file support
Use a PST file (Outlook Data File) to backup or export items from your email account

No

Yes

No

No*

Delegation
Allow someone else to manage
your mailbox and calendar.

Yes

Yes

No

Yes

Shared mailboxes
Allow groups of users to monitor
and send emails from a shared
mailbox.

Yes

Yes

No

Yes

Offline support

No

Yes

Yes

No*

Web add-ins
Integrations built on Outlook by
using our modern web-based
platform.

Yes

Yes

No

Yes

COM Add-ins
Integrations built on Outlook using COM integration.

No

Yes

No

No

*Coming soon

**Supported in Outlook for Windows through the To-Do Bar

***With limited capabilities