I want to set up a rule that automatically flags specific emails for follow-up in a week's time. The criteria are simple: all emails from a defined sender with a specific phrase in the subject line. I can do this in the Windows version of Outlook, but it's a client-side rule that will only operate when I've got the Windows client open. I can't set a similar rule in the Mac version. And I use the Mac client most of the time. (a) I don't understand why this can't be a server-side rule, and (b) it's so frustrating that there's still a massive gap in so much of the Windows/Mac functionality.

As a user of Outlook connected to Exchange, I want to add information to an unsent meeting invite when I am not connected to a network.
Expected result: The calendar invite can be updated before it is sent (in a similar manner to unsent emails), and the recipient sees the latest version.

Actual result: Changes made to unsent meeting invites are lost, and there appears to be no way to recover the unsent changes that were made.
Client version: Outlook for Mac 16.12 (180410)

Server: Exchange (unknown version)

Steps to reproduce:

1. Disconnect from network (preventing Outlook from sending).
2. Create a meeting with an invite and click Send. The invite will fail to send, as expected, and appear in Outbox.
3. Open the same meeting invite found in Outbox, add some text to the invite, and click Send.
4. Note that the invite in the Outbox now appears to show the changes that were just made.
5. Reconnect to network and wait for the invite to actually send (or Send/Receive).
6. After it is sent, check Sent for the invite and note that the changes made are gone, and the recipient of the invite does not see them either. Neither Drafts nor Sent has the unsent changes.

The steps can be repeated with an email instead of a meeting invite, and it behaves as expected.

Restore the ability to export individual folders from Outlook (Mac) to .OLM or .PST. The "all or nothing" approach from Outlook 2016 onwards is useless if you keep a lot of email in Outlook.

e.g. If I sort my email by project or year, at some point I want to offload those emails b/c they are not needed "live". I used to be able to right-click -> Archive and create an archive of the selected folder. Thus I could reduce the resource load in the Exchange server (and clutter in Outlook) but still have access to the emails if necessary. In Outlook 2016 onwards the only option I have is to export *ALL* my email. You can see how this is no longer useful.

It's not clear why you removed this useful feature. Searching through the annals of internet history show that there are many other users also wondering the same thing.

With all of the complexities of the ways you can sort mail, this basic functionality is missing. I want the default view to be my newest unread messages at the top of the inbox. Thanks to Diane Poremsky MVP, I understand that it is possible to use the View > Filter By > Unread command to show only unread messages, then flip the arrow to show newest on top. But then you can't see the read messages, and if you take the filter off or do a search, it changes the order of the unread so that the oldest are on top. I don't want to have to keep changing it back. Thank you.