I'm using Thunderbird on Linux with an Outlook work account. Granted, I have to pay for 'Owl for Exchange' for it work, but I absolutely hate the Outlook program, I'm willing to fork out the $10/yr of my own money just to avoid it.

If you still have IMAP access, thunderbird supports OAuth2 for connecting to O365 IMAP. tbsync for calendar access. Seems to work pretty well currently.

That is my setup. Works 100%.

No more IMAP

Need MS for other toolings

The web version of Outlook probably works well on other OSes.

As pointed out elsewhere. My comment wasn’t really on outlook itself. There are other things that bind me to MS ecosystem.

I’m sure that’s true for a lot of people.

does on my linux mint, no problem (for now...)

Do you not have different machines for work and personal use?

I don’t do more work outside of my professional work.

I get away with just my phone and an iPad for everything else.

Doesn't Outlook have a web version?

It does, but the applications and environments I need to use are Windows only anyway.

IT policy also doesn’t let us have anything other than Windows. I could skirt it for the day to day stuff, but I wouldn’t want to maintain my setup in multiple places anyway

Thunderbird works pretty well with Office365 accounts.

I’ll have to check it out, but sometimes I think I should just lean in to all the MS integrations.

I do like OneNote and use the ‘Send to OneNote’ for meeting notes all the time.