You can download the sample CSV file from the software interface and edit it with the source details like source login account, source password, source server name, source port number, SSL number, etc.
A. No, the tool provides it for you. It includes all IMAP Server account server names, authentication information, and port number details within the software interface itself. So, for adding any IMAP account, you just require the log in credentials.
No, the folder structure and metadata remain as it is during and after the IMAP mailbox backup. You will have the IMAP data in PST file exactly as it was in the IMAP Server.