Enable an option to display declined meetings in teh calendar (in settings). Often initially one is not available for a meeting, but then due to changes of schedule might be able to join, but since that meeting is not displayed in calendar, simply forgets about that. I found that option very helpful in Google mail that we used up to now in the company.

Allow to revert to the old Ribbon icon set in Outlook 2016 especially in Enterprise scenario.

Flagged emails should not be defaulted to yellow highlight as well as the red flag. This should be an optional function turned on/off or provide an option to make it an optional feature.

I would like the option to send meetings requests with BCC, CC so all information about all invitees is not shared with everyone that is invited

Also, Outlook calendar entries need BCC, CC – without showing these!

Sometimes the owner of a meeting (or, more often, meeting series) is on vacation or changes jobs; it would be nice if they could assign ownership of an instance (for vacation) or the full series (for job changes) to someone else. Also provide an option to create a meeting on someone's behalf without being included in the meeting.

In Microsoft Outlook 2016, when we forward\reply\reply all to the email with attachments, the attachments are not available and we have to attach them manually. An option to reply all to the email with all the attachments included would be more productive in Microsoft Outlook 2016 as that option is not available as of now.

Add 'Acknowledged' and 'Thanks' buttons to emails that will tell the sender you have seen/appreciate their email, without having to send another, thereby reducing email traffic.

The provided color schemes make it very difficult to distinguish folders

The entry fields for TO and CC are taller than the spacing of their labels to the left. This leaves less vertical space for the Subject entry field (both not aligned to its label, as well as narrower than the TO & CC fields), and looks very sloppy. Please revert it to the older format or provide an option to select between the new and old format.

Please give us back the opportunity to categorize meetings with different colours

You should be able to (under tracking) easily email or reach out to those who have not responded to an outlook invite to a meeting request. The only way I see it can be done now, is to hand extract those individuals and resend a new meeting request.

I find that I cannot change the color of agenda items or calendar items for my email accounts in Microsoft Outlook. I use various Android apps on my tablet and phone, that allow me to show Agenda items and Calendar items. If I use gmail, I can easily select a color, whereas with Outlook accounts I cannot change the color to suit my preferences. Also provide an option or feature to set different events with different colors in Calendar as well as in Categories in Microsoft Outlook 2016.

It would be great if Outlook sync'd your email signature across multiple devices so that you only have to set or update it once.

When I'm writing an email, I would like to be able to type an email from my contacts into the "to" bar and have outlook autocomplete the email without me having to go to the contacts menu.

The dark theme is great in Outlook, however the inability to change the background and text color of the reading pane make it almost painful.

It would be fantastic to have the ability to configure the default CSS for the reading pain and text/html therein.

Do not change the history of meetings that have already occurred when make changes to a recurring meeting for future dates.

Meetings as FYI Only -

Please add a fourth meeting response option such as "Information Only" which automatically responds "Decline" but leaves the meeting info on your calendar. The meeting response would also automatically show the calendar as "FREE" with "No Reminder". This allows the user to change their response without having to sift through deleted emails or respond tentative leaving others to guess as to your meeting participation when you have no intention of going at all.

In the task bar, latest icons for Outlook 365 and Word 365 are too similar (blue).
It's confusing.

Regards,