need to be able to open another mailbox from the new OWA like you can in the old OWA

There used to be an option to open others' calendars and I cannot find it now. In the old OWA it's: right click on Other calendars/Open calendar/From directory

No plug-in for adding skype meeting info. Can't use this feature without being able to add these details.

put all of the emojis in the outlook

When emailing and you accidentally put someones name in the "To" line but need to move them to the "Cc" line. You use to be able to just drag them back and forth. Now you have to delete and then re-add them in the appropriate place.

What happened to undo send??

Loading my mail under the new system was taking at least four times longer. Loading a simple text email shouldn't (and doesn't under the old system) lag and take more then just a click to open.

In the new version I can't drag the attachments between a windowed mail to antoher new messages.
Now I need to save the attachment and then to reattach to the new message.

I want to print my daily calendar with room for notes

The new colored outlines on white flags make categorizing nearly useless because it's so hard to see the flags. I prefer the old, solid colored flags.

Can't access the group/team onedrive to attach documents to an email. This is a MAJOR issue.

In the new interface it's missing the email calendar event reminder email, there is only the pop-up alarm.
Please, recoverit, thanks!

Within the old version of Outlook 365 you could open an email and click on the menu on the right side of the email and select from the dropdown the Reply All by Meeting. Great feature. For when you need to schedule a meeting about the email that has been sent. Now I have to go back to the old version to do this.

I didn´t like the new colors and show the attachment is not helpfull, just use more space of my view.

Right now I can't search in just the Archive Mailbox - when I select it and search for a keyword, it returns nothing, even when that keyword is clearly in the subject of the first email in the list. Need to be able to search Archived mail.

Need to be able to access Distribution Groups (not Office 365 Groups) from OWA like in old version so users can self-service join/leave.

https://support.office.com/en-us/article/distribution-groups-e8ba58a8-fab2-4aaf-8aa1-2a304052d2de

The original messages does not show when forwarding or replying to a message.

As a moderator of a distribution list I frequently get messages demanding my approval of denial of mails sent to this distribution list.
In the old Outlook on the web you get two buttons in the "Your decision is requested" mail - one for approval, one for denial.
In the new Outlook on the web the "Your decision is requested" mail looks the same but is missing the buttons for approval.
Please integrate these buttons! Or is there another way I am missing?

Open in a separate window (for messages in Inbox) does not open a new window with the message but rather a new window with the WHOLE Inbox!

which is annoying