Customer context: The customer wants to delete an old email account and create a new one, and is concerned about losing existing tickets.
Customer: If I delete an incoming email account and create a new one, will the tickets to the old email be deleted?
Answer: No, the tickets won't be deleted as they are not tied to the email account. You can delete the old email account and connect a new one. Changing an email account's details is not possible, so you need to delete the unused one and connect a new one again. More info about connecting email accounts can be found in this guide https://support.liveagent.com/458758-Email-accounts-configuration-introduction.