Many mailing lists set the In-Reply-To header, to indicate that the mail is a reply to another. However outlook does not seem to respect this header, and thus the mail thread is not correctly detected. When using alternative programs, for example Apple's Mail.app, the mails are shown correctly threaded.

All the messages on the list look the same; new emails should be in bold and emails should be colored by category as they were in 2011. As it is now, different messages are not easily visually differentiated.

I got problem when inputting Chinese character. Chinese Pinyin will always come out together with Chinese Character

Please add BRITISH ENGLISH spell check.

Good morning. Why can't support "delivery confirmation" and improve public folders management as Outlook for Windows? Thank you

Do not show mails in 'other' box as unread email

Make Send/Receive Pull Down Individual select for email - Like it is in 2011

The "checked markers" you can add when you have read or finished doing a task from mail, is grey and not so easy to see when you scroll down all your mail. Earlier they were green and much easier to see. I would like you to colour them again with an easy to spot colour!

Need Outlook for Mac and Sharepoint task list working together

Address the issue where email attachments are saved, then opened from a temp directory when accessed from email directly. If the user makes changes to the attachment and attempts to save the file, the default save location is the same parent directory as the attachment. That temp directory's contents are deleted when Outlook quits which can be a problem when the user doesn't realize where they're saving and save the file to the temp directory. Later when looking to access the file they can't because the file has been deleted.

Please provide support for google intergration the imap is not working well plus there is no calendar support or contact support.

Apple OSX - Outlook 2016

Copy and paste from webpage HTML to composed HTML message loses style/css. I would suggest exploring enhancement to the rendering. Including pasting of table boarders, center align, and text formatting.

I would like the ability to choose to store a sent email to a different folder at the time I send an email

Change default setting paragraph format for emails in outlook for mac not possible. Please change this! We need to change it every time we create an email

It would be really great to be able to add HTML code such as embed codes into rich HTML messages.

Please Improve the "Move email" function so that you can see the folder tree and allow emails to be clicked and dragged (but not duplicated)

I suggest that when you have a rule that forwards an email that it doesn't move the original message from its existing folder into the "Drafts" folder.

The attachment filenames are truncated so it is impossible to tell which file is which if you have attachments with the same start to the filename.