The last two places I worked at that had office 365, everyone just used the web interface. It was pretty miserable but beat having a separate application just for email.

A separate application is nicer because you can switch to it with alt-tab or number keys instead of finding it among all your other tabs.

You can pin the tab in Firefox. And there's a shortcut for switching to the first tab.

Yeah but Firefox drops pinned tabs from memory all the time if you're low on RAM. It's definitely not as reliable as a separate app.

I've used auto tab discard for a long time and exempted the outlook tabs. I think Firefox was taking that feature to main, but not sure how they interact.

I don't go low on ram often enough to notice anything, or the exemption still works.

That's solved by keeping it in its own window.

That works on Windows where alt+tab cycles between ... er, windows, but not on macOS, where CMD+tab cycles between apps. As another commenter said, the 'shortcut' feature (e.g. for PWAs) is a workaround.

This constantly pissed me off, especially since MacOS always seemed to pick the wrong window to jump to.

There's an open source project to fix it though: https://alt-tab-macos.netlify.app/

Together with an app to fix the scroll wheel and a calendar widget, working with MacOS becomes almost bearable.

CMD-` has always cycled through open documents, going back to the original Mac OS.

Sure, but alternating between the two is less convenient. You can also cycle between tabs using a keyboard shortcut.

You can also type "%outlook" in the address bar in Firefox and jump directly to the tabs that contain "outlook" in their names.

PWA is your friend