If you want to save your Office 365 mailbox to PST then here is an informative article Backup Office 365 Mailbox To PST. This article will provide the most effective manual solution to accomplish the process. However, the manual solution is a high chance of risk. So, additionally, they will also offer a professional solution Office 365 Migration Tool. It is the most secure and powerful tool that helps to migrate Office 365 mailbox items including all the attachments. With the help of this tool, you can easily backup or migrate your Office 365 mailbox to different files or folders and several email clients. Moreover, the utility ensures a smooth working process without any technical expertise. Additionally, it supports all versions of the Windows operating system. You can try the trial versions of the software to analyze the performance.