Enable 'keychain-access-groups' entitlements in your Xcode build to allow modern auth with client certificates in Outlook for High Sierra.
Trying to log into our SSO portal, I'm asked to select my client certificate for auth, but then taken to a 'access denied' screen. Outlook doesn't have permissions to access other items in the keychain in it's entitlements, so it can't access the cert.

I see secd errors in Console.app all day.

Support outlook for windows mail features. Including flag for follow up that will put a flag and date alert on the recipients email.

When adding someone (or even a resource) to the shared calendars list, the account of that calendar appears in the From field when sending an email, and appears in the Autoreply Settings as a user you can change this for. There doesn't seem to be anything wrong with security rights, because sending an email or changing the Out of Office (autoreply) settings will get you an error. It clutters up our input fields though.

E.g. KMail allows user to set up each folder (not just Inbox) such that new messages are "acted upon", meaning that desktop notifications will be shown for them. It is a surprising that expensive enterprise product such as MS Office does not have that feature...

As I'm getting older I find it harder to distinguish between very slight differences in contrast and hard to see very light text on light colored background. Please add a high contrast theme to Outlook. The new theme would be especially helpful on the folder list. Best would be capability to have purely black background with white letters or the reverse, white background with black letters. The current white background with light grey letters is killing my eyes.

When creating large meetings it is difficult to track meeting attendance status. In the Windows version you are able to copy attendee status to the clip board which I can then paste into Excel and build a pivot table to quickly see who has accepted an not responded. When there are more 12 users in the meeting this become very important in a business setting.

Thank you

Please allow mac user to assign tasks on outlook, it is a huge inconvenience for those of us who have to work on outlook on a mac

Need the ability to assign tasks to others

I regularly need to view multiple shared calendars (often 8 or 9). This is fine in Outlook for Windows which allows multiple shared calendars to be displayed side-by-side in the day view, but the Mac version limits me to 3 calendars side-by-side. Adding any more merges the content making it much more difficult to identify individuals and schedule activities. I'd like to see the restriction removed to allow multiple calendars to be displayed in individual columns making scheduling across multiple individuals and rooms much easier.

Unread folder (just like windows version), not a smart folder at the bottom of the list. I have 80-100 subfolders and many, many rules for my incoming email. Having the Unread folder at the top just like the windows version would be much more helpful.
Or, if not possible have the Smart folder option also be a Favorite.
Please at the Favorite star to Smart Folders too.

Show sent messages in conversations.

In Outlook for Windows and in OWA, if you draft an email to a user who has an Out Of Office notification enabled, then a MailTip shows up in the compose window (above the To: field) with a warning that the person is Out Of Office. This should also exist in Outlook for Mac

Support for internet calendar feeds. The main use case is the ability to see conference schedules in Outlook. For example, I attended WPC and Ignite this year and had to keep switching back and forth between Outlook and the conference website/apps to determine my true schedule.

Used frequently now in our company due to flexible working. e.g. Working from Home or other office. Setting the calendar on available leads to people assuming you are in office, on away people feel you are not available for a meeting.

Should be a very easy feature to implement.

The new updates have removed the ability to drag and drop attachments from emails. The windows version still has this. I should be able to drag an attachment to another email without downloading it or drag and drop the attachment to the desktop.

The windows client lets you select email threads and ignore all future responses to it. There's no reason mac users shouldn't have this option. I would love to ignore all threads involving my coworkers cats or memes on my mac client, but I can't. I'm forced to live with their cats and cat meme threads.

The Outlook client should have a way of syncing the email signature from the cloud.

It is important to keep all signature synchronized between all clients, Outlook web, Outlook client, Outlook for mac, Outlook for iOS and so on.

The Exchange Transport Rule is not an ideal fit for this scenario.