Hey do you use Outlook ?
If its about outlook "SHIFT+DEL" deletion problem then you may want to do some registry changes as deleted items are still kept in memory.
And if its not this then you may use some popular tool like
Easeus
otherwise here is how can you adjust registry for Outlook case
search for regedit
open regedit
expand HKEY_LOCAL_MACHINE
expand and go to SOFTWARE
expand and go to Microsoft
expand and go to Exchange
expand and go to Options
add the entry 'DumpsterAlwaysOn REG_DWORD 0x00000001 (1)'
and after Restart of system
you may go to Microsoft Outlook -> Tools -> Recover Deleted Items...to recover a folder then simply select the corresponding mailbox and select 'Recover Deleted Items...', which will enable you select and recover the Shift + Deleted folders of that mailbox. It will show you all the emails of that folder available for you to be recovered (based on storage quota).