monitoring manual scan mailbox store

Hello

I want to know which mailbox are scaned adn which isn’t.

For example in same environment there are 1000 mailbox (2 two database)  if  I have maintenance window than I can  run manula scan (for example 1 hour  I want to know  which mailboxes are scane and which aren’t . It is possibility to achive ?  Then when I can again scan want only scan this mailboxes which haven't scaned yet.