In outlook for windows you can drag and drop the email accounts to reorder them however you like. I would like to see this functionality in outlook for mac as well.

The ONLY reason we haven't enabled Safelinks is because the URL's are unreadable when you hover over them on a Mac. Webmail and Windows now show a message that displays the proper domain on hover, why is this taking so long for Mac?!?

Create Add Project (similar to a task) that users can create/add tasks to.... either "User defined" tasks or "emails" flagged as tasks.
I suspect there are a lot of users who would pay for this addition.
Collaboration feature would be great. Like combining MS Teams with Outlook

add user defined fields for flagged emails

A meeting notification contains a "Join Online" button when the meeting has either a Skype or Teams meeting linked to the item. Clicking on this button currently opens the browser. Clicking on this button should instead start the meeting in the appropriate app (Skype or Teams). Like it does on Windows.

When I get an email from an international colleague, I have to manually translate using a translation service. In Word and Excel there are translate features built right in to the desktop applications. Could an translation feature be baked into the Outlook client? It would be important for business adoption to not log all the contents of mail messages being translated.

afficher le détail du message transféré (de, à, date , objet).

Seule la date apparait

Please enable the ability for users to disable the recent addresses function in Outlook for MAC 2016. Users receive automated emails with a noreply address from a user within a tool and since it's in the list of recently used addresses for that user it's selected by mistake and they get a bounce-back message. The list also becomes unusable over time.

I have a large email collection arranged in a complex hierarchy of folders, both on the server and on my computer. I would find it very useful to tell where each message is stored when I look at the result of a search on all available email folders. Sometimes I am just looking to see if some messages are lost in the wrong folder...

Needing to keep track of the time I work in each task, it would be very useful to have a timer.

When a meeting is updated with a time or room change either a) highlight or b) add context around, whether the time was changed (context: previous time) and/or the room was changed (context: previous room). Problem: when meetings are updated— especially last minute updates or recurring meetings—it is easy for people to miss exactly what changed and cause confusion.

Contact Groups previously created on OWA and Outlook (PC) should be able to migrate to Outlook for Mac.

We use a 3rd party spelling checker from Druide Informatique called Antidote for Outlook for Mac. Since moving to macOS 10.14 Mojave, the checker is broken. It still works with other applications such as Word, but not Outlook. Our information suggests that Apple introduced security features in macOS that are to blame. We see two options: (a) Microsoft “signs” the Antidote connector for Outlook or (b) Microsoft publishes a new API to be consumed by 3rd parties such as Druide Informatique. Will Microsoft consider either of these options?

If a meeting has been rescheduled and a new meeting invite is sent out, it would be nice to see that 1) it is a rescheduled meeting and not a new meeting, and 2) when the previous meeting time was. This is particularly difficult if the meetings are in a series and all have the same name, so I don't know if this week's meeting was rescheduled or next week's, for example.