There can be many reasons for deleting and corrupting Outlook database like size limitation of PST file. Virus detect in PST file, damaged header structures, accidental email deletion and other damaging reason. And we lost our important metadata. Outlook email recovery software is only one brilliant and potential algorithm which recover all Outlook contains like e-mail, calendars, meeting, journal, notes, contacts etc. and also recovers deleted email form Outlook.
Outlook recovery software also provides a demo for user guideline. Which is free of cost but demo can repair only damage and corrupted PST file don't save repair file in the system.
For Recovering email from Outlook, you can purchase full version of Outlook repair software.