There are several methods available online to back up the AOL mailbox into the local system without any data loss. Users have to take the help of an advanced way
OSTtoPSTAPP AOL Backup software. This advanced utility utilizes advanced technology to backup AOL mailboxes into multiple file formats, including PST, MBOX, EML, and EMLX, without any data loss. It also securely stores all exported files at a designated location on the user's desktop, making it compatible with all versions Microsoft Windows operating systems.
Read More:
https://www.osttopstapp.com/aol-backup.html