Just like the Archive folder and option within Outlook, w would like to see a folder, Ribbon button and context menu option called "Read Later". This is useful to help keep the Inbox organized and clean.

Add voting buttons in meeting request in Outlook 2016. It is very handy to have a voting button so the meeting organizer can receive responses for the votes along with accept/decline!

Keep the assigned colors to identify the different appointments, in the calendars of the interlocutors who share the calendar

Ability to print multiple calendars (such as personal and public calendars) using the Print Options feature in order to print all relevant calendars on a single page rather than a separate print out for each calendar. This allows each user to fine tune their print calendar print outs to include both the Public calendar entries plus their own personal calendar entries. This feature will be more efficient and prevent missed appointments due to incorrect allocation of appointments to wrong calendars. This will be environmentally friendly with less paper use.

I would love it if an alert would pop up if more than 15 or 20 names are entered in the "To" field. The alert might read, "Are you sure you want to include so many names in this field? Consider pasting your list of recipients in the "Bcc" field instead."
This would have served as a reminder and saved me much embarrassment (twice now!!) because of sending an email where all 500+ email addresses appear before the body of the email.

Thank you!!!

Outlook Cannot Silently Retract Messages. Outlook can retract (called Message Recall in Outlook), but whether successful or not, the recipient knows that the attempt was made (and the attempt includes the subject line).

Allow printing of e-mails from Android smart phones.

Allow removal of contact or email from suggested contacts in Microsoft Outlook 2016.

They are now on the upper right hand corner, whereas before they were on the left.
On large, widescreen monitors, these are never in your direct line of sight and are "hidden" out of sight in the upper right hand corner.

Allow the ability to have calendar and email open at the same time while using the desktop app

Please include spell checking function when authoring your automatic replies (out of office). There is currently no spell check running there.

So we don't have to click on download pictures on every single message.

In Outlook for Windows: File-> Options-> Calendar. In Calendar options there is "Default duration for new appointments and meetings" value that could be set to 30 min, 1 hour, 1,5 hour and 2 hour.

An organisation have a need to decide themselves the duration of the new meeting by default. F.ex. 15, 45 (academic hours) or 50 minutes.

To reduce the number of emails churning with thank yous etc, adding a button that can show/capture that the message has been read/liked/or thumbs up, where all recipients can see the status, (ie all recipients have read the email, and liked it). This will reduce the number of 'Thanks' reply all emails we all receive. Also reflects the social media style 'confirmation' of messages, and the same in Teams where you can thumbs up a message.

Allow the user to select a certain sound/notification for the focused inbox and another sound (or no sound) for the other inbox. Will prevent me from stopping my work and checking my email only yo see that I got a general non-urgent email in my other inbox. If I had a chime for my focused inbox and no sound for the other inbox, I could get more work done.

A good Spam filter

Possibility to copy paste recurring appointments in a calendar to avoid having everything to re-enter

After the recent 365 Update, it seems the Categories Option (with different colors) is not available for Calendar Events/meetings. Please bring it back!!!! Right away!!!

Sort or Group contacts by Company