If you wish to back up your Microsoft 365 emails as PST files. The GainTools Office 365 Backup Tool is a simple and dependable answer. It lets you safely export all of your mailbox data, like as emails and attachments, into PST format. The software preserves your folders and files in order, so nothing gets lost or mixed up. You can back up more than one account at a time, which saves time and work. It has a simple UI that makes it great for people who aren't very tech-savvy. You can trial the software for free before you buy it to see how well it performs and make sure it fulfills your needs.