We already have GPOs to enable caching in Outlook but these settings are valid for all accounts added. It would make sense to have distinct settings for the default account where I would e.g. cache items for 24 month but for all other accounts maybe only 3 to 12 months for performance reasons regarding OST files.

When saving Quick Access Toolbar commands, can each ui be saved into one ui. It would be so much easier then saving changes individually or copying the .ui files. Thanks

If IMessage::SubmitError fails and returns MAPIEEXTENDED_ERROR, IMessage::GetLastError gets called. If you supply MAPIERROR structure to Outlook it does not use the information on MAPIERROR in the displayed error box. I think the information returned by GetLastError should be shown in the error message popup.
See: https://social.msdn.microsoft.com/Forums/office/en-US/96ca73d6-e4d4-462e-9791-d3e035b288ff/mapi-extended-errors-for-imessage?forum=outlookdev#8803715e-ac2f-4788-b2ad-74eca08b8723

When selecting text on creating emails (e.g. Ctrl-A) containing hyperlinks (e.g. http://www.microsoft.com) and choosing text color "automatic" should not change the hyperlink color
-> See OneNote

Insights will inform you to delay based on who, working hours, etc, puts in Sent Items. Outlook has a native feature as an option to add to any mail, puts in Outbox. The two behave completely different

Dear Outlook,
I had a conversation with Outlook Social Media team on Twitter. They asked me to suggest "All Accounts" feature which is available for years in Outlook for Mac. This is still not available in Outlook for Windows. Why?

the possibility to set the default duration for meetings and appointments to 15 minutes. Today the lowest value is 30 minutes.

I often get a picture of a powerpoint slide as anembedded GIF/JPG. I want to be able to click it and enlarge for better reading. If I reply to the message I can enlarge by dragging the boarders, but I can't do the same in the original email.

Sometimes in an email I am writing, I need to attach an email that is open. This is cumbersome, I need to find the open email in my history to be able to drag and drop it in the new email. Please add the list of open emails in the "attach file" dropdown.

When someone has more than 3 address,email,phone,IM,etc. It's hard to create the person.
And I can't see all filled fields after created.
So inconvenient!
As google can add serveral fields with customize labels, I believe Microsoft can do it well.

In der eMailÜbersicht sollte die "Absender-eMailAdresse" angezeigt werden, damit Phishingmails erkannt werden können.

My calendar is almost always packed. When i receive a meeting request it is very difficult to see what is conflicting - especially when multiple all-day events are present. If I could resize the meeting peek it would make it a lot more useful.

What's with the snooze option "0 hours before start"? Why not "meeting start time"? Your users aren't robots - well, at least not most of us.

It is good that search is displaying results from all folders when an item is not found in the current folder. For better tracking, please add a column Folder in the view of the results to identify in which folder that message resides.
Thanks!

In support of the Prode movement, you should be able to highlight text and select rainbow, and have every letter colored a different color

We need a way to audit changes to tasks especially when many folks have permission to add/change/delete tasks in our task list. There are a lot of sync issues as well and sometimes we need to recover from a change that was made but too late to undo.

When Outlook client includes corp. @microsoft.com A/C

Have Message Alert window appear in front of all other open winodws. At present it gets lost until open windows are minimized

Edge has amazing voice options for read aloud but outlook's options are not great. We shoud bring the voices on edge over. Zira is too robot sounding but the natual options in edge almost sound, "natural".