Using older versions of Outlook for Mac for personal email and calendar
Unfortunately my email is set up as a POP account. So I am pretty sure, if I delete my account, I will loss all my current emails. I read the following directions in an Apple forum from 2015.
"If you remove the account, you will lose all of the emails that are in the Inbox for that account. What you need to do is first create a new mailbox. Move all of the messages from the account you wish to delete into the new mailbox. You should do the same for the Sent messages in that account. Once you have moved all of your messages into the new mailboxes, you can go ahead and delete the account. Before deleting the account, check both the Inbox and Sent mailboxes to be sure they are empty."
To be honest, I am also afraid that one mistake will cost me dearly in terms of losing years worth of valuable emails in a practical sense. I have observed times where Outlook would not open my own old email files that it recognized were somehow from a different account.