Download a very secure application named MailsDaddy Office 365 Backup Tool to migrate Office 365 to PST completely. It provides complete and utmost security to each item of the Exchange Online mailboxes without any system downtime. It helps in downloading emails, journals, notes, attachments, etc. from Exchange Online to PST, EML, MBOX and PST format. The software creates Office 365 backup to PST in an organized format through its well-developed features. The Office 365 Export PST utility gives the smooth solution to export Office 365 mailbox to PST Outlook.