Windows 10: Windows 10 mail has deleted my entire inbox

Hi, yesterday I came into work and my entire inbox was deleted. We are using the default windows 10 mail app. Emails are not in deleted folder either. Mails received yesterday were also deleted overnight but these were in the deleted folder this morning. How is this possible?

:)

 

Delete mails in Outlook but want to keep mails untouch in webmail

When I deleted an email in outlook and my webmail got deleted too. I want to keep all the inbox mails from the webmail even I complete deleted in outlook. I spend hrs can't think it out how. Any step by step instruction? I'm using IMAP account btw. Thanks and Merry Christmas.

 

Delete Inbox Mail only

How do I delete a message in my Inbox ONLY in Windows 10? Every time I select the the Inbox mail item it deletes the entire thread - Sent Mail too. I want Sent Mail to remain.

 

Windows 10 Mail App deleting emails in my Gmail Inbox

When I delete an email received in my Win 10 Mail App inbox, the same email is also deleted in my Gmail inbox, automatically. I would like to prevent this. Emails deleted from my Mail App should be left behind in my Gmail inbox. Could I prevent this deletion from happening by changing an IMAP Access setting in my Gmail settings?

I attach two pictures. In the one, you can see how my Win 10 Mail App was configured by Windows when I added my Gmail account. In the other picture, you can see what I consider changing in my IMAP settings at GMail. I have no idea if this will help and whether I should make this change. I am fairly computer-illiterate.

Could somebody advise me please?