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

In Microsoft Outlook 2016, when 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.

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.

I use more than one machine to read & send emails using Outlook 365. I would like any signature that I create to be automatically synced (including with office.com) so that it is available regardless of which machine I am using.

Allow us to change the font, its size, and style for the to, cc, bcc and subject lines of an email. I have checked online and lots of people have this problem, no fix has been suggested. July 24, 2018

Outlook allows you set a default font and choose your own font for your signature, but no matter what you do, there will always be at least 1 blank line below your signature (in new messages and replies) where the font reverts back to Calibri. This means if you remove your signature, then start typing, you are not in your default font and must manually change it.

Make the attachment icon brighter in dark mode.

Fix it!!

I'd like to identify the folders by color and do the same for incoming mail in table view. Also would be great to change rows color in table view.

Could not edit the subject line of the email in mailbox.

Combat spam by bouncing emails back to a sender making them think your email address is not valid. I used to do this all the time when using an older email client on Windows XP. I started when I was getting over 100 spam emails a day, and managed to reduce this to 2 a week

Now user is enabled only to change the text style for replys in MS Outlook, but not only for inline comments. It would be a wonderful option to choose a separate style for replays and for inline comments as I would like to keep a standard style for general replays and choose a different coloured text for inline comments (to be separated in the previous e-mail).

Why did you remove the delete option in the pop up window when an email is received?

Add a "search" box to the email MOVE feature on the desktop version of Outlook (like there is on the online version). This feature is a huge time saver.

If you unintentionally move an email into the wrong folder, there should be an undo button to undo last move

When getting lots of junk email with same domain name(with different email accounts) it would be great if we get an option to block senders domain. We can edit the blocked senders , but its again a tedious process and we may end up doing this daily. Adding a button on Junk so we can block the senders domain right away would be an easier way to tackle this menace.

Provide an option to insert an image or embed in the body of message in outlook 2016 or to allow embedding an image from attachment; Attached image as inserted image in document flow.

Mailtips on all Outlook clients: when a mailtip about external recipient is shown, the external recipients should be highlighted in to/cc/bcc fields to make external recipients to stand out.
This should apply to at least Outlook for Windows and in web client version as well.

It'd be great to reduce the new size of the "from", "to" and "CC/BCC" columns in both the Popped Out New Email window and the inset 'reply' window. There's a lot of "dead-air" above the line where one writes the email