In Outlook for Microsoft 365 Options, the options Notes and Journal is removed. New notes have a default color of yellow, default size of medium, default font of 11 point Calibri, and display the date and time that the note was last modified.
These options are not read and cannot be changed from any preferences or registry keys.

Suppose you'd like to add a couple more commands to the Quick Access toolbar. Also, say you want to work with every e-mail in new window. You can add the Open in New Window button to the Quick Access toolbar.

To turn on/off a rule, follow next steps:

Outlook proposes next shortcut keys for easy and quickly work with Calendar:

Creating custom menus in Outlook is a funny feature you can use to create groups of the options that you use most often, and then plug them into the menu you name and use yourself.

If you want to construct a more complicated distribution list, with some recipients on the To field, some recipients on the Cc field, and yet more recipients on the Bcc field, you have to use a message template where you explicitly assign recipients to each field.

In some situation you may want to send your vCard in every message. This lets recipients enter the information in their address book quickly and without errors.

By default, Outlook groups your emails by conversations. A conversation is a thread of messages with the same subject. However, if you need to find relevant notes somewhere in the last week's emails or an email from a particular person, navigating emails grouped by conversations takes a lot of time, and changing default grouping settings helps to locate the information much faster.

Any of Outlook's default views can be modified to suit your needs. You can customize the fields displayed, sorting, grouping, filtering, fonts, and other formatting options.

Like the Inbox and other message views, the Calendar view also has a Reading Pane that lets you preview appointments and other items in your schedule without opening them.