Using New Outlook on Windows for personal email, calendar, and contact management
Hi, I'm John! I will help you with this.
Just to clarify, are you using an Outlook.com (Microsoft) email account or one provided by your email service (like your ISP or a work email)?
If it’s an Outlook.com or Microsoft 365 account, your emails should still be stored on the server, and we can try re-syncing them. But if it’s a POP account, your messages might have been stored locally and could be missing after reinstalling.
Can you confirm which type of account it is?
Click "Add comment" to let me know.
Regards,
John J.D.