Addon or plugin for Outlook 2019/365 to show additional calendars in To Do pane?

One serious problem with Outlook right now is that it's quite dumb in showing calendar previews in the Mail tab. Rather than aggregating all events from all calendars and displaying them there, it only shows events from the primary calendar.

For instance, I probably have close to 40 events on my collective calendars within the next 7 days, but this is what I see in Outlook:

Wow, what a liar, Microsoft!

If there were a way to change my primary calendar to the one that is at least used the most, I would consider doing that. But that is impossible. You cannot change the primary calendar.

Suggestions like this have not been useful because all my calendars are associated with one email account (which in this case is a Microsoft account). Merging them is also not an option. The ability to have multiple calendars exists for a reason.

I don't really want to go the third-party route, as up until now, I have been able to recover from Outlook's limitations rather reasonably, but it seems this is a feature that was removed from Office one or two versions ago (as with many other useful Office features). If I had it my way, I'd probably be using Office 2010, 2007, or 2003, but I have a free license right now so I guess beggars can't be choosers.

Is there any third-party workaround to enable this functionality in Outlook?

Solution 1:

You can use the Puresoft Outlook Todo Pane AddIn to display multiple calenders in the todo bar. Link is enter link description here