Originally Posted by
Dadstar0410 I am migrating my info to outlook from the modern mail, calendar, and people apps, and I can't help but wonder why two separate software exist: The modern apps all run through outlook, yet they also have features that don't exist in the desktop version of outlook. For example, contacts do not sync with the outlook servers in the desktop app: Contacts must be imported. Also, they don't even sync with each other. If I delete mail in the modern app, idk why it doesn't get deleted in the desktop version. Is there evidence of a merger in Windows 10? Right now I'm not really understanding the point of having both of these Outlook "platforms".
They're separate apps - the Modern ones don't run though Outlook.
If you connect Mail and Outlook at the same outlook.com account then Contacts, Calendars, Mail stay in sync (via the outlook.com servers). There's no need to import/export anything. It all just happens in the background.
If you're having "deleted in one but not the other" email issues, it could be you've got Mail or Outlook connecting to an email server with POP (rather than EAS or IMAP etc (which have smarts to keep them in sync - POP is "dumb")).