The font size of the email folders is waay too small. 2007 used to allow you to change the font size. Why did you remove it? I can't be the only person out there who would like to make the folder size larger without making everything on my computer bigger. Please make it so we can change the font size of the email folders. And the menu words. Why did you remove it?

This Archive button will be separate to the button in the ribbon and the optional Quick Access Toolbar one.

Please add Indonesia holiday country in the "Add Holidays to Calendar" feature.

A function for all meeting notes to stay in the meeting/appointment request. No link send out or one note to open but always keep the notes taken during the meeting. When a follow up meeting is taken place the notes follows from previous meeting.

Underneath the Month and Year for printed calendars, there should be an option to include the calendar's name.
E.g:
March 2018
Production-Release Cycle

Outlook for Web has a nice graphic when you reach Inbox Zero. For Outlook for Desktop, it leaves much to be desired. It just says, "We didn't find anything to show here." It would be nice if it said "You're all caught up" or some other graphic that makes you feel like you achieved something by reaching Inbox Zero.

Add a Categories Pane to Outlook. I'm a big user of categories and it would be great to allow for easily selecting and adding categories to Outlook items. The current process of right-clicking and then assigning 1-by-1 or selecting "All Categories" and then choosing multiple selections are both cumbersome (same thing when accessing from the ribbon). A pane would ease my current pain.

Option to make Vault Folder and sub-folders with separate background colour. Reason: it's too easy to be searching for a folder, or filing emails, into a Vault folder accidentally, while thinking you are in your main set of folders. A different background colour (or e.g. different font for names) would make clear that you are in the Vault. Thank you for considering.

The scroll bar in Outlook does not actually scroll the email list. When the user drags it, the bar slides along, doing nothing. When the user releases it, the email list jumps to the commanded location.

Is this be the preferred UI? Please provide a way to make the scroll bar work the way it does in every other application.

Make a sort setting for "read".

As we can filter by unread right now but it would be good if there would be an option to sort emails by read or unread in Outlook 2016

Allow categories for IMAP email messages; this can be with local folder category settings or using the categories of a connected Exchange/MAPI folder if it is selected as the default folder.

I'm trying to switch to Inbox Zero, but since a unified Inbox is not really possible because I do not get Send As delivery of connected accounts in Outlook.com, I can at least use color categories in my IMAP accounts.

When you print a calendar in Outlook, you are limited by the current colour selection for Conditional Fornatting, which does not allow sufficient colour hue selection to accommodate the lighter shades of a colour. The current colour selections are too dark making it difficult to read appointment details when printing two or more (eg: 4) months per page. Using Windows version 1803, build 17134.112.

It will be good if Outlook will notify me via sound, an envelope icon, and a desktop alert whenever a message arrives. When this message was sorted into the "Other" folder instead of the "Focused" folder, I don't want this interruption. Please only notify of message arrival when the message lands in "Focused".

Please Add Indonesia Calender for Holiday

Please disable so called Focused/Other inbox split by default.
It is just time-waster and impossible to disable.

It would be great to have (even optional) a mode that allows to read emails arranged like a conversation on Messenger or WhatsApp.
Especially for long email conversations is hard to reply to a particular email - you have to go back to that point leaving apart all the updates that came after

FIX IT, No viting, no bad "it is as designed" etc. etc. Just fix it.