To export the mailbox to pst office 365 Powershell you need to use the Aryson Office 365 backup and restore tool. This tool is the best tool to create a backup of Office 365 PowerShell and gives you the freedom to create a backup of Office 365 amazingly. Now you might be thinking that why I am suggesting this is why I am not suggesting the manual method to create a backup of Office 365. 

Here, is the reason why I am not suggesting the manual method. 

Reason 01) It is a time-consuming process.

Reason 02) To continue with the manual method you must need to have technical knowledge.

Reason 03) Chances of data loss must be increased. 

What are the benefits of using the professional method?

Benefit 01) It helps to create a backup of your complete Office 365 folders like mailboxes, public folders, and archive folders.

Benefit 02) In professional method to migrate the Office 365 data of Gmail, Thunderbird, Yahoo, and so many other email clients.

Benefit 03) You can save the Office 365 email into multiple file formats like PST, PDF, MBOX, EMLX, EML, and MSG. 

Benefit 04) You can set the data range filter to create a backup of Office 365.

Benefit 05) You can use this in Windows, Mac, and Linux. 

But, if you want to read about the other methods then you read this article 03 Free Ways to Export Office 365 Mailbox to PST File in Easy Steps.