How to add the 'All Accounts Inbox' in Outlook for Windows 11

This is very aggravating. I scoured my settings and then found this chain of comments. It's highly inefficient to have to toggle between inboxes. Furthermore, it doesn't allow me to select which inbox lands in my favorites, and then there's no notification showing unread emails in each inbox. It stinks!

"There is no uniformity in Outlook." - exactly - that's what I'm finding all the time.
If you search for a problem, such as the missing combined inbox, the replies you get mention settings pages that don't even exist in "the most recent" copy of Outlook(New) I installed , er, recently... It's beyond belief that Microsoft would issue a program which looks in the early stages of development like this. I wonder what they'll call the next version - Outlook(New) doesn't really scale, does it? I suggest Outlook(New)(New) and so on. Anyone tried the OEClassic mail program?

Windows Mail in Windows 10 certainly did have this feature and I'm still using it.

I'm new to this thread--came upon it when doing a google search for how to add a unified in-box to PC version of MS365 Outlook app. I'm also flabbergasted that the feature doesn't exist, especially considering that I can do this on my Android Phone Outlook App. I decided to use the work-around mentioned earlier to put all Inboxes individually into my Favorites section, so at least I can see when different accounts have new mail without scrolling thru all accounts.

There was an earlier comment that MS has a junior team working on MS Outlook. That's almost certainly true. What engineer or marketing high-flier would want to work on a legacy product? As an engineer myself, I'm certain that it would not be difficult to add this feature, nor is it likely to add bugs. But the development team likely gets credit for fixing outright bugs and not creating new ones. Very unlikely that they get any credit for adding new features.

In any case, I'd like to add my voice to this group: "MS--Time to add a unified in-box!"

Thanks, John for the info.

For the moment, I'm trying a workaround. I have made the inboxes only for each separate email account a favorite so they get displayed at the top. I have to expand an email account to look at any other folders.

Not perfect, but workable so far. Only glitch is it keeps marking read emails as unread in one of my Gmail accounts.

I'm going to check out Mailbird though. Cheers.