I currently use Outlook 2016 (with .pst files storing my data, not IMAP), my Calendar within Outlook is my iCloud Calendar, which syncs to my Phone and iPad. When I'm not at my computer, I can't see the emails that I have put colored categories on for follow-up, or see the folders where I have stored all my emails . And I worry about the .pst file crashing, but at the same time I don't want to move to IMAP because once you delete something it is gone for good.
What "setup" would allow me to see my contacts, calendars, and emails THE SAME WAY across all Windows and Apple devices so I can manage them all wherever I am?